add missing close in proxy
add missing close in proxy

Signed-off-by: Victor Vieux <ce584ac70734cfa5a848cd28039798932c7ea675@docker.com>

srikalyan/swarm,bpradipt/swarm,kunalkushwaha/swarm,srikalyan/swarm,bdwill/docker.github.io,CodeNow/swarm,pssahi/swarm,barais/swarm,CiaranCostello/swarm,doronp/swarm,snrism/swarm,troy0820/docker.github.io,ezrasilvera/swarm,joaofnfernandes/docker.github.io,FollowMyDev/swarm,denverdino/docker.github.io,rchicoli/swarm,danix800/docker.github.io,jzwlqx/denverdino.github.io,kunalkushwaha/swarm,troy0820/docker.github.io,johnstep/docker.github.io,akerbis/armhf-swarm,zkcrescent/swarm,menglingwei/denverdino.github.io,bdwill/docker.github.io,ehazlett/swarm,riuvshin/swarm,joeuo/docker.github.io,FreedomWangLi/swarm,jdamick/swarm,menglingwei/denverdino.github.io,raoofm/swarm,morpheyesh/swarm,ezrasilvera/SwarmACLs,ealang/swarm,aidora/pisces,shubheksha/docker.github.io,unodba/swarm,rutulpatel/swarm,phiroict/docker,parapsyche/swarm,bdwill/docker.github.io,mrjana/swarm,ch3lo/swarm,joeuo/docker.github.io,snrism/swarm,joaofnfernandes/docker.github.io,christophelec/swarm,londoncalling/docker.github.io,echupriyanov/swarm,chanwit/swarm,menglingwei/denverdino.github.io,gdevillele/docker.github.io,CiaranCostello/swarm,jimenez/swarm,alexisbellido/docker.github.io,schmunk42/swarm,deis/swarm,docker-zh/docker.github.io,gradywang/swarm,LuisBosquez/docker.github.io,shahankhatch/swarm,LukasBacigal/swarm,atlassian/swarm,swarm-hooks/swarm,adouang/swarm,akerbis/armhf-swarm,linecheng/swarm,errordeveloper/swarm,pdevine/swarm,marsmensch/swarm,alexisbellido/docker.github.io,echupriyanov/swarm,JimGalasyn/docker.github.io,u2mejc/swarm,alexisbellido/docker.github.io,EderRoger/swarm,therealbill/swarm,joaofnfernandes/docker.github.io,joeuo/docker.github.io,sanscontext/docker.github.io,rillig/docker.github.io,linecheng/swarm,jimmycmh/swarm,SivagnanamCiena/swarm,bpradipt/swarm,docker-zh/docker.github.io,jzwlqx/denverdino.github.io,denverdino/docker.github.io,qianzhangxa/swarm,denverdino/docker.github.io,iaintshine/swarm,tranceitionalMynd/swarm,MHBauer/swarm,auzias/swarm,mrjana/swarm,jimmycmh/swarm,LuisBosquez/docker.github.io,docker-zh/docker.github.io,gdevillele/docker.github.io,errordeveloper/swarm,thaJeztah/docker.github.io,liubin/swarm,liubin/swarm,cpuguy83/swarm,cpuguy83/swarm,krystism/swarm,denverdino/swarm,docker/docker.github.io,johnstep/docker.github.io,BSWANG/swarm,sfsmithcha/swarm,danix800/docker.github.io,rancher/swarm,xFragger/swarm,affo/swarm,jzwlqx/denverdino.github.io,krystism/swarm,menglingwei/denverdino.github.io,yp-engineering/swarm,sanscontext/docker.github.io,NunoEdgarGub1/swarm,aidora/pisces,polyverse-security/swarm,beni55/swarm-1,londoncalling/docker.github.io,polyverse-security/swarm,gonkulator/swarm,londoncalling/docker.github.io,ezrasilvera/swarm,JimGalasyn/docker.github.io,adouang/swarm,JimGalasyn/docker.github.io,bsmr-docker/swarm,rillig/docker.github.io,denverdino/denverdino.github.io,gdevillele/docker.github.io,auzias/swarm,qianzhangxa/swarm,denverdino/swarm-1,PeoplePerHour/libswarm,LuisBosquez/docker.github.io,riuvshin/swarm,yp-engineering/swarm,BSWANG/swarm,anweiss/docker.github.io,ricca742/swarm,moxiegirl/swarm,menglingwei/denverdino.github.io,chanwit/swarm,dims/swarm,shot/swarm,denverdino/docker.github.io,jimenez/swarm,Aorjoa/swarm,deis/swarm,tranceitionalMynd/swarm,denverdino/denverdino.github.io,phiroict/docker,danix800/docker.github.io,moxiegirl/swarm,ejholmes/swarm,ejholmes/swarm,cgvarela/swarm,parapsyche/swarm,shot/swarm,troy0820/docker.github.io,gdevillele/docker.github.io,shin-/docker.github.io,allencloud/swarm,schmunk42/swarm,barais/swarm,iaintshine/swarm,beni55/swarm-1,docker/docker.github.io,shubheksha/docker.github.io,rchicoli/swarm,rillig/docker.github.io,fugr/swarm,marsmensch/swarm,tangkun75/swarm,denverdino/denverdino.github.io,troy0820/docker.github.io,denverdino/swarm-1,atlassian/swarm,Spritekin/swarm,jdamick/swarm,phiroict/docker,rillig/docker.github.io,jay-lau/swarm,mavenugo/swarm,joaofnfernandes/docker.github.io,shubheksha/docker.github.io,BSWANG/denverdino.github.io,rajdeepd/swarm,doronp/swarm,denverdino/swarm,sanscontext/docker.github.io,docker/docker.github.io,gonkulator/swarm,shin-/docker.github.io,xFragger/swarm,raoofm/swarm,FreedomWangLi/swarm,PeoplePerHour/libswarm,aduermael/docker.github.io,mgoelzer/swarm,FollowMyDev/swarm,cgvarela/swarm,LuisBosquez/docker.github.io,pssahi/swarm,NunoEdgarGub1/swarm,johnstep/docker.github.io,jimmyxian/swarm,unodba/swarm,shin-/docker.github.io,Aorjoa/swarm,gradywang/swarm,BSWANG/denverdino.github.io,gdevillele/docker.github.io,resouer/swarm,shahankhatch/swarm,ricca742/swarm,rav121/swarm,ezrasilvera/SwarmACLs,aduermael/docker.github.io,anweiss/docker.github.io,Spritekin/swarm,pdevine/swarm,londoncalling/docker.github.io,docker-zh/docker.github.io,anweiss/docker.github.io,rav121/swarm,bsmr-docker/swarm,therealbill/swarm,kyhavlov/swarm,rajdeepd/swarm,ealang/swarm,docker/docker.github.io,joeuo/docker.github.io,thaJeztah/docker.github.io,dnephin/swarm,bdwill/docker.github.io,phiroict/docker,kyhavlov/swarm,abronan/swarm,rancher/swarm,BSWANG/denverdino.github.io,megamsys/swarm,phiroict/docker,johnstep/docker.github.io,mountkin/swarm,swarm-hooks/swarm,francisbouvier/swarm,anweiss/docker.github.io,denverdino/docker.github.io,BSWANG/denverdino.github.io,JimGalasyn/docker.github.io,jeffjen/swarm,joeuo/docker.github.io,thaJeztah/docker.github.io,aduermael/docker.github.io,rutulpatel/swarm,resouer/swarm,morpheyesh/swarm,MHBauer/swarm,CodeNow/swarm,dims/swarm,londoncalling/docker.github.io,francisbouvier/swarm,abronan/swarm,sanscontext/docker.github.io,denverdino/denverdino.github.io,mountkin/swarm,shubheksha/docker.github.io,docker-zh/docker.github.io,alexisbellido/docker.github.io,everett-toews/swarm,sanscontext/docker.github.io,BSWANG/denverdino.github.io,megamsys/swarm,bdwill/docker.github.io,jeffjen/swarm,vlajos/swarm,mavenugo/swarm,u2mejc/swarm,jimmyxian/swarm,allencloud/swarm,vlajos/swarm,shubheksha/docker.github.io,aduermael/docker.github.io,JimGalasyn/docker.github.io,shin-/docker.github.io,alexisbellido/docker.github.io,fugr/swarm,shin-/docker.github.io,johnstep/docker.github.io,tangkun75/swarm,sfsmithcha/swarm,christophelec/swarm,jzwlqx/denverdino.github.io,affo/swarm,ehazlett/swarm,jzwlqx/denverdino.github.io,everett-toews/swarm,thaJeztah/docker.github.io,jay-lau/swarm,docker/docker.github.io,SivagnanamCiena/swarm,EderRoger/swarm,mgoelzer/swarm,LukasBacigal/swarm,LuisBosquez/docker.github.io,denverdino/denverdino.github.io,thaJeztah/docker.github.io,zkcrescent/swarm,dnephin/swarm,joaofnfernandes/docker.github.io,danix800/docker.github.io,ch3lo/swarm,anweiss/docker.github.io