trafficserver: only write USER once
trafficserver: only write USER once

Ref https://github.com/Homebrew/homebrew/commit/6eac1bf3b0407c5931f120e699c3718899dcc7f2#commitcomment-14108066.

xyproto/homebrew,eagleflo/homebrew,ExtremeMan/homebrew,ilovezfs/homebrew,sjackman/linuxbrew,tsaeger/homebrew,geoff-codes/homebrew,jiashuw/homebrew,dgageot/homebrew,Homebrew/homebrew,treyharris/homebrew,Linuxbrew/linuxbrew,redpen-cc/homebrew,iandennismiller/homebrew,sometimesfood/homebrew,danabrand/linuxbrew,vigo/homebrew,grepnull/homebrew,alebcay/homebrew,ralic/homebrew,youtux/homebrew,bigbes/homebrew,haihappen/homebrew,zchee/homebrew,AlekSi/homebrew,drewwells/homebrew,totalvoidness/homebrew,dgageot/homebrew,Angeldude/linuxbrew,bigbes/homebrew,arg/homebrew,retrography/homebrew,SteveClement/homebrew,Homebrew/linuxbrew,afb/homebrew,youtux/homebrew,skinny-framework/homebrew,a-b/homebrew,bitrise-io/homebrew,knpwrs/homebrew,pdxdan/homebrew,galaxy001/homebrew,TaylorMonacelli/homebrew,kodabb/homebrew,davidcelis/homebrew,pcottle/homebrew,tsaeger/homebrew,tstack/homebrew,kashif/homebrew,tseven/homebrew,changzuozhen/homebrew,max-horvath/homebrew,Cutehacks/homebrew,mkrapp/homebrew,gicmo/homebrew,Homebrew/homebrew,keith/homebrew,liamstask/homebrew,lmontrieux/homebrew,kodabb/homebrew,OJFord/homebrew,heinzf/homebrew,osimola/homebrew,cosmo0920/homebrew,danabrand/linuxbrew,afh/homebrew,emcrisostomo/homebrew,max-horvath/homebrew,lvicentesanchez/homebrew,yangj1e/homebrew,galaxy001/homebrew,manphiz/homebrew,MoSal/homebrew,emcrisostomo/homebrew,amjith/homebrew,brunchboy/homebrew,jeremiahyan/homebrew,xcezx/homebrew,esamson/homebrew,base10/homebrew,liamstask/homebrew,dolfly/homebrew,hyuni/homebrew,royhodgman/homebrew,a-b/homebrew,danieroux/homebrew,chadcatlett/homebrew,polishgeeks/homebrew,Linuxbrew/linuxbrew,xyproto/homebrew,zhipeng-jia/homebrew,pcottle/homebrew,kad/homebrew,coldeasy/homebrew,reelsense/linuxbrew,elgertam/homebrew,davidcelis/homebrew,cHoco/homebrew,gawbul/homebrew,pcottle/homebrew,vihangm/homebrew,Habbie/homebrew,slyphon/homebrew,DoomHammer/linuxbrew,influxdata/homebrew,jarrettmeyer/homebrew,frodeaa/homebrew,xcezx/homebrew,dutchcoders/homebrew,afh/homebrew,base10/homebrew,influxdb/homebrew,drbenmorgan/linuxbrew,jeremiahyan/homebrew,Linuxbrew/linuxbrew,ryanfb/homebrew,ybott/homebrew,ExtremeMan/homebrew,eighthave/homebrew,elyscape/homebrew,benjaminfrank/homebrew,SuperNEMO-DBD/cadfaelbrew,recruit-tech/homebrew,cprecioso/homebrew,afh/homebrew,emcrisostomo/homebrew,drewwells/homebrew,tjschuck/homebrew,frickler01/homebrew,AGWA-forks/homebrew,hongkongkiwi/homebrew,dunn/homebrew,hanxue/homebrew,sakra/homebrew,lvicentesanchez/linuxbrew,marcusandre/homebrew,reelsense/linuxbrew,drbenmorgan/linuxbrew,liamstask/homebrew,menivaitsi/homebrew,dkotvan/homebrew,teslamint/homebrew,mobileoverlord/homebrew-1,vihangm/homebrew,esamson/homebrew,youtux/homebrew,haihappen/homebrew,influxdata/homebrew,influxdb/homebrew,quantumsteve/homebrew,arnested/homebrew,BrewTestBot/homebrew,codeout/homebrew,DoomHammer/linuxbrew,jiashuw/homebrew,princeofdarkness76/homebrew,jamer/homebrew,patrickmckenna/homebrew,hakamadare/homebrew,redpen-cc/homebrew,gnawhleinad/homebrew,keith/homebrew,xcezx/homebrew,danieroux/homebrew,marcusandre/homebrew,sferik/homebrew,sferik/homebrew,Angeldude/linuxbrew,lvicentesanchez/homebrew,yangj1e/homebrew,tstack/homebrew,cosmo0920/homebrew,changzuozhen/homebrew,dutchcoders/homebrew,bchatard/homebrew,megahall/homebrew,adamliter/homebrew,scorphus/homebrew,Homebrew/linuxbrew,lrascao/homebrew,retrography/homebrew,yangj1e/homebrew,jsjohnst/homebrew,cHoco/homebrew,ebouaziz/linuxbrew,arnested/homebrew,bukzor/linuxbrew,frickler01/homebrew,zeha/homebrew,lrascao/homebrew,frickler01/homebrew,ento/homebrew,dericed/homebrew,Chilledheart/homebrew,bigbes/homebrew,jmagnusson/homebrew,AlexejK/homebrew,ryanfb/homebrew,felixonmars/homebrew,petere/homebrew,esamson/homebrew,treyharris/homebrew,ybott/homebrew,keith/homebrew,windoze/homebrew,AlekSi/homebrew,megahall/homebrew,thinker0/homebrew,georgschoelly/homebrew,drewwells/homebrew,knpwrs/homebrew,Gasol/homebrew,kvs/homebrew,davydden/linuxbrew,BrewTestBot/homebrew,zeha/homebrew,Gasol/homebrew,afb/homebrew,Linuxbrew/linuxbrew,kevinastone/homebrew,recruit-tech/homebrew,koraktor/homebrew,kodabb/homebrew,elgertam/homebrew,jedahan/homebrew,kenips/homebrew,LonnyGomes/homebrew,ear/homebrew,marcusandre/homebrew,moyogo/homebrew,AlexejK/homebrew,ablyler/homebrew,codeout/homebrew,ilovezfs/homebrew,jeremiahyan/homebrew,razamatan/homebrew,dunn/homebrew,kad/homebrew,vihangm/homebrew,pcottle/homebrew,kashif/homebrew,dolfly/homebrew,SuperNEMO-DBD/cadfaelbrew,Noctem/homebrew,royhodgman/homebrew,davydden/linuxbrew,ablyler/homebrew,base10/homebrew,manphiz/homebrew,koraktor/homebrew,booi/homebrew,TaylorMonacelli/homebrew,benjaminfrank/homebrew,Red54/homebrew,Homebrew/linuxbrew,davydden/linuxbrew,kad/homebrew,mmizutani/homebrew,AlekSi/homebrew,michaKFromParis/homebrew-sparks,eighthave/homebrew,iandennismiller/homebrew,SteveClement/homebrew,skinny-framework/homebrew,jmagnusson/homebrew,quantumsteve/homebrew,dericed/homebrew,cosmo0920/homebrew,moyogo/homebrew,emcrisostomo/homebrew,johanhammar/homebrew,scpeters/homebrew,patrickmckenna/homebrew,yangj1e/homebrew,dplarson/homebrew,zeha/homebrew,geoff-codes/homebrew,LinusU/homebrew,redpen-cc/homebrew,jiashuw/homebrew,Habbie/homebrew,sometimesfood/homebrew,zchee/homebrew,jedahan/homebrew,hanxue/homebrew,dplarson/homebrew,pdxdan/homebrew,getgauge/homebrew,tutumcloud/homebrew,mmizutani/homebrew,tseven/homebrew,grepnull/homebrew,davidcelis/homebrew,cprecioso/homebrew,bitrise-io/homebrew,reelsense/homebrew,influxdata/homebrew,apjanke/homebrew,hakamadare/homebrew,arg/homebrew,grepnull/homebrew,AGWA-forks/homebrew,jab/homebrew,lrascao/homebrew,optikfluffel/homebrew,Homebrew/homebrew,joshfriend/homebrew,yumitsu/homebrew,skinny-framework/homebrew,3van/homebrew,BrewTestBot/homebrew,lmontrieux/homebrew,jab/homebrew,Habbie/homebrew,cchacin/homebrew,windoze/homebrew,mmizutani/homebrew,bukzor/linuxbrew,alex/homebrew,a-b/homebrew,recruit-tech/homebrew,nelstrom/homebrew,kashif/homebrew,kevinastone/homebrew,yazuuchi/homebrew,skatsuta/homebrew,dplarson/homebrew,yumitsu/homebrew,totalvoidness/homebrew,benjaminfrank/homebrew,getgauge/homebrew,amjith/homebrew,booi/homebrew,frickler01/homebrew,cprecioso/homebrew,arnested/homebrew,muellermartin/homebrew,filcab/homebrew,cHoco/homebrew,filcab/homebrew,cchacin/homebrew,gnawhleinad/homebrew,cHoco/homebrew,marcwebbie/homebrew,nandub/homebrew,Gasol/homebrew,lmontrieux/homebrew,elyscape/homebrew,cchacin/homebrew,BrewTestBot/homebrew,grepnull/homebrew,kvs/homebrew,decors/homebrew,bigbes/homebrew,mactkg/homebrew,kashif/homebrew,polishgeeks/homebrew,jeremiahyan/homebrew,hongkongkiwi/homebrew,nelstrom/homebrew,reelsense/homebrew,skinny-framework/homebrew,Red54/homebrew,hanxue/homebrew,sakra/homebrew,nandub/homebrew,kvs/homebrew,tschoonj/homebrew,tjschuck/homebrew,LonnyGomes/homebrew,tschoonj/homebrew,josa42/homebrew,3van/homebrew,utzig/homebrew,elyscape/homebrew,elgertam/homebrew,bukzor/linuxbrew,osimola/homebrew,quantumsteve/homebrew,pcottle/homebrew,dongcarl/homebrew,zchee/homebrew,changzuozhen/homebrew,georgschoelly/homebrew,zhipeng-jia/homebrew,scpeters/homebrew,feelpp/homebrew,dunn/homebrew,slyphon/homebrew,jiashuw/homebrew,knpwrs/homebrew,Chilledheart/homebrew,frodeaa/homebrew,iandennismiller/homebrew,AGWA-forks/homebrew,mmizutani/homebrew,TaylorMonacelli/homebrew,brunchboy/homebrew,yazuuchi/homebrew,ebouaziz/linuxbrew,jconley/homebrew,dalanmiller/homebrew,cscetbon/homebrew,kenips/homebrew,afh/homebrew,OJFord/homebrew,iostat/homebrew2,mkrapp/homebrew,changzuozhen/homebrew,heinzf/homebrew,joshfriend/homebrew,mactkg/homebrew,arnested/homebrew,Asuranceturix/homebrew,retrography/homebrew,Asuranceturix/homebrew,yazuuchi/homebrew,dolfly/homebrew,gawbul/homebrew,haihappen/homebrew,danieroux/homebrew,ralic/homebrew,ebouaziz/linuxbrew,okuramasafumi/homebrew,Noctem/homebrew,menivaitsi/homebrew,ehamberg/homebrew,hyuni/homebrew,petere/homebrew,lvicentesanchez/homebrew,dgageot/homebrew,kad/homebrew,optikfluffel/homebrew,alebcay/homebrew,tschoonj/homebrew,zeha/homebrew,thinker0/homebrew,eighthave/homebrew,dkotvan/homebrew,Noctem/homebrew,ento/homebrew,mobileoverlord/homebrew-1,Asuranceturix/homebrew,zchee/homebrew,Cutehacks/homebrew,adamliter/homebrew,Red54/homebrew,felixonmars/homebrew,dongcarl/homebrew,ehamberg/homebrew,ablyler/homebrew,miketheman/homebrew,miketheman/homebrew,SuperNEMO-DBD/cadfaelbrew,dickeyxxx/homebrew,drbenmorgan/linuxbrew,osimola/homebrew,pdpi/homebrew,mkrapp/homebrew,tsaeger/homebrew,ralic/homebrew,max-horvath/homebrew,marcusandre/homebrew,princeofdarkness76/homebrew,moyogo/homebrew,windoze/homebrew,manphiz/homebrew,royhodgman/homebrew,vigo/homebrew,yazuuchi/homebrew,blogabe/homebrew,georgschoelly/homebrew,ablyler/homebrew,okuramasafumi/homebrew,ge11232002/homebrew,saketkc/linuxbrew,MartinDelille/homebrew,ear/homebrew,jsjohnst/homebrew,cscetbon/homebrew,jamer/homebrew,alebcay/homebrew,tschoonj/homebrew,gvangool/homebrew,AlekSi/homebrew,yumitsu/homebrew,coldeasy/homebrew,lvicentesanchez/linuxbrew,theeternalsw0rd/homebrew,filcab/homebrew,jarrettmeyer/homebrew,utzig/homebrew,elyscape/homebrew,davydden/linuxbrew,optikfluffel/homebrew,zhipeng-jia/homebrew,muellermartin/homebrew,influxdb/homebrew,xyproto/homebrew,gicmo/homebrew,base10/homebrew,ralic/homebrew,decors/homebrew,felixonmars/homebrew,amjith/homebrew,apjanke/homebrew,ge11232002/homebrew,feelpp/homebrew,hyuni/homebrew,ExtremeMan/homebrew,pdpi/homebrew,optikfluffel/homebrew,utzig/homebrew,thinker0/homebrew,dericed/homebrew,tstack/homebrew,kvs/homebrew,reelsense/homebrew,reelsense/linuxbrew,adamliter/homebrew,jedahan/homebrew,decors/homebrew,MoSal/homebrew,jsjohnst/homebrew,jab/homebrew,nelstrom/homebrew,scorphus/homebrew,danabrand/linuxbrew,bchatard/homebrew,gnawhleinad/homebrew,ryanfb/homebrew,filcab/homebrew,coldeasy/homebrew,iostat/homebrew2,jab/homebrew,pdxdan/homebrew,kenips/homebrew,LonnyGomes/homebrew,dplarson/homebrew,influxdb/homebrew,feelpp/homebrew,gnubila-france/linuxbrew,Cutehacks/homebrew,hongkongkiwi/homebrew,Cutehacks/homebrew,thinker0/homebrew,jmagnusson/homebrew,osimola/homebrew,johanhammar/homebrew,alex/homebrew,johanhammar/homebrew,ilovezfs/homebrew,decors/homebrew,DoomHammer/linuxbrew,mobileoverlord/homebrew-1,elgertam/homebrew,Asuranceturix/homebrew,nandub/homebrew,nelstrom/homebrew,iostat/homebrew2,polishgeeks/homebrew,michaKFromParis/homebrew-sparks,muellermartin/homebrew,gicmo/homebrew,cosmo0920/homebrew,theeternalsw0rd/homebrew,bukzor/linuxbrew,alex/homebrew,liamstask/homebrew,totalvoidness/homebrew,teslamint/homebrew,dkotvan/homebrew,reelsense/homebrew,hyuni/homebrew,sakra/homebrew,razamatan/homebrew,Habbie/homebrew,gicmo/homebrew,blogabe/homebrew,mactkg/homebrew,retrography/homebrew,tstack/homebrew,xcezx/homebrew,lmontrieux/homebrew,hongkongkiwi/homebrew,xyproto/homebrew,bchatard/homebrew,utzig/homebrew,kevinastone/homebrew,patrickmckenna/homebrew,LinusU/homebrew,deorth/homebrew,eagleflo/homebrew,youtux/homebrew,sjackman/linuxbrew,cscetbon/homebrew,jsjohnst/homebrew,iandennismiller/homebrew,iostat/homebrew2,saketkc/linuxbrew,Chilledheart/homebrew,OJFord/homebrew,princeofdarkness76/homebrew,ear/homebrew,TaylorMonacelli/homebrew,afb/homebrew,Asuranceturix/homebrew,brunchboy/homebrew,gnubila-france/linuxbrew,bchatard/homebrew,dkotvan/homebrew,sferik/homebrew,DoomHammer/linuxbrew,arg/homebrew,bitrise-io/homebrew,theeternalsw0rd/homebrew,dolfly/homebrew,dutchcoders/homebrew,AGWA-forks/homebrew,chadcatlett/homebrew,a-b/homebrew,miketheman/homebrew,apjanke/homebrew,josa42/homebrew,hakamadare/homebrew,jamer/homebrew,vihangm/homebrew,ehamberg/homebrew,hanxue/homebrew,galaxy001/homebrew,frodeaa/homebrew,tutumcloud/homebrew,eagleflo/homebrew,joshua-rutherford/homebrew,treyharris/homebrew,pdxdan/homebrew,menivaitsi/homebrew,gnubila-france/linuxbrew,esamson/homebrew,LinusU/homebrew,lvicentesanchez/linuxbrew,ExtremeMan/homebrew,megahall/homebrew,AlexejK/homebrew,ilovezfs/homebrew,3van/homebrew,slyphon/homebrew,ehamberg/homebrew,mobileoverlord/homebrew-1,jconley/homebrew,cprecioso/homebrew,sometimesfood/homebrew,joshua-rutherford/homebrew,ryanfb/homebrew,Red54/homebrew,joshua-rutherford/homebrew,benjaminfrank/homebrew,kenips/homebrew,okuramasafumi/homebrew,ebouaziz/linuxbrew,slyphon/homebrew,SteveClement/homebrew,davidcelis/homebrew,dericed/homebrew,johanhammar/homebrew,eighthave/homebrew,afb/homebrew,gvangool/homebrew,haihappen/homebrew,codeout/homebrew,blogabe/homebrew,jamer/homebrew,SteveClement/homebrew,ge11232002/homebrew,codeout/homebrew,jconley/homebrew,skatsuta/homebrew,georgschoelly/homebrew,dickeyxxx/homebrew,vigo/homebrew,dunn/homebrew,blogabe/homebrew,menivaitsi/homebrew,tjschuck/homebrew,saketkc/linuxbrew,quantumsteve/homebrew,jedahan/homebrew,sferik/homebrew,max-horvath/homebrew,dalanmiller/homebrew,teslamint/homebrew,cchacin/homebrew,scorphus/homebrew,jarrettmeyer/homebrew,jarrettmeyer/homebrew,feelpp/homebrew,gnubila-france/linuxbrew,bitrise-io/homebrew,alebcay/homebrew,tsaeger/homebrew,kodabb/homebrew,MoSal/homebrew,zhipeng-jia/homebrew,kevinastone/homebrew,booi/homebrew,LinusU/homebrew,razamatan/homebrew,tseven/homebrew,dongcarl/homebrew,heinzf/homebrew,dickeyxxx/homebrew,ybott/homebrew,galaxy001/homebrew,gvangool/homebrew,totalvoidness/homebrew,dickeyxxx/homebrew,lvicentesanchez/linuxbrew,chadcatlett/homebrew,royhodgman/homebrew,saketkc/linuxbrew,joshfriend/homebrew,amjith/homebrew,brunchboy/homebrew,frodeaa/homebrew,razamatan/homebrew,mactkg/homebrew,dongcarl/homebrew,ybott/homebrew,AlexejK/homebrew,danieroux/homebrew,princeofdarkness76/homebrew,gawbul/homebrew,koraktor/homebrew,geoff-codes/homebrew,miketheman/homebrew,drewwells/homebrew,Noctem/homebrew,patrickmckenna/homebrew,alex/homebrew,skatsuta/homebrew,gvangool/homebrew,SuperNEMO-DBD/cadfaelbrew,OJFord/homebrew,nandub/homebrew,geoff-codes/homebrew,dutchcoders/homebrew,MartinDelille/homebrew,scorphus/homebrew,koraktor/homebrew,getgauge/homebrew,theeternalsw0rd/homebrew,joshua-rutherford/homebrew,arg/homebrew,pdpi/homebrew,heinzf/homebrew,sometimesfood/homebrew,LonnyGomes/homebrew,tseven/homebrew,ento/homebrew,josa42/homebrew,MartinDelille/homebrew,ento/homebrew,redpen-cc/homebrew,sjackman/linuxbrew,apjanke/homebrew,deorth/homebrew,polishgeeks/homebrew,Gasol/homebrew,teslamint/homebrew,ear/homebrew,Homebrew/homebrew,michaKFromParis/homebrew-sparks,influxdata/homebrew,MoSal/homebrew,jmagnusson/homebrew,Chilledheart/homebrew,tutumcloud/homebrew,eagleflo/homebrew,marcwebbie/homebrew,treyharris/homebrew,petere/homebrew,Homebrew/linuxbrew,reelsense/linuxbrew,moyogo/homebrew,dalanmiller/homebrew,petere/homebrew,okuramasafumi/homebrew,windoze/homebrew,dalanmiller/homebrew,marcwebbie/homebrew,skatsuta/homebrew,vigo/homebrew,manphiz/homebrew,drbenmorgan/linuxbrew,adamliter/homebrew,deorth/homebrew,tjschuck/homebrew,jconley/homebrew,Angeldude/linuxbrew,muellermartin/homebrew,dgageot/homebrew,scpeters/homebrew,danabrand/linuxbrew,scpeters/homebrew,keith/homebrew,MartinDelille/homebrew,recruit-tech/homebrew,megahall/homebrew,lvicentesanchez/homebrew,gnawhleinad/homebrew,coldeasy/homebrew,getgauge/homebrew,marcwebbie/homebrew,ge11232002/homebrew,sjackman/linuxbrew,3van/homebrew,knpwrs/homebrew,felixonmars/homebrew,Angeldude/linuxbrew,pdpi/homebrew,SteveClement/homebrew,hakamadare/homebrew,sakra/homebrew,tutumcloud/homebrew