transport-git: fix git request length calculation
transport-git: fix git request length calculation

There was an off-by-one error that was uncovered when we used the
right length from git_buf.

Signed-off-by: Carlos Martín Nieto <ab5e2bca84933118bbc9d48ffaccce3bac4eeb64@cmartin.tk>

maxiaoqian/libgit2,mrksrm/Mingijura,claudelee/libgit2,amyvmiwei/libgit2,jamieleecool/ptest,evhan/libgit2,t0xicCode/libgit2,raybrad/libit2,falqas/libgit2,linquize/libgit2,Snazz2001/libgit2,mcanthony/libgit2,yongthecoder/libgit2,Aorjoa/libgit2_maked_lib,Corillian/libgit2,evhan/libgit2,spraints/libgit2,evhan/libgit2,falqas/libgit2,dleehr/libgit2,Snazz2001/libgit2,iankronquist/libgit2,oaastest/libgit2,sygool/libgit2,mcanthony/libgit2,chiayolin/libgit2,mrksrm/Mingijura,kenprice/libgit2,ardumont/libgit2,jeffhostetler/public_libgit2,nokiddin/libgit2,sim0629/libgit2,MrHacky/libgit2,raybrad/libit2,spraints/libgit2,yongthecoder/libgit2,mrksrm/Mingijura,claudelee/libgit2,mhp/libgit2,skabel/manguse,chiayolin/libgit2,nokiddin/libgit2,JIghtuse/libgit2,MrHacky/libgit2,maxiaoqian/libgit2,swisspol/DEMO-libgit2,since2014/libgit2,magnus98/TEST,dleehr/libgit2,mingyaaaa/libgit2,amyvmiwei/libgit2,ardumont/libgit2,kissthink/libgit2,iankronquist/libgit2,leoyanggit/libgit2,KTXSoftware/libgit2,magnus98/TEST,mhp/libgit2,zodiac/libgit2.js,mcanthony/libgit2,jeffhostetler/public_libgit2,magnus98/TEST,yosefhackmon/libgit2,chiayolin/libgit2,sim0629/libgit2,whoisj/libgit2,JIghtuse/libgit2,ardumont/libgit2,yongthecoder/libgit2,t0xicCode/libgit2,whoisj/libgit2,swisspol/DEMO-libgit2,raybrad/libit2,swisspol/DEMO-libgit2,jamieleecool/ptest,swisspol/DEMO-libgit2,mhp/libgit2,MrHacky/libgit2,leoyanggit/libgit2,mingyaaaa/libgit2,joshtriplett/libgit2,dleehr/libgit2,JIghtuse/libgit2,sygool/libgit2,saurabhsuniljain/libgit2,saurabhsuniljain/libgit2,nacho/libgit2,saurabhsuniljain/libgit2,yosefhackmon/libgit2,kissthink/libgit2,skabel/manguse,yongthecoder/libgit2,stewid/libgit2,claudelee/libgit2,rcorre/libgit2,joshtriplett/libgit2,since2014/libgit2,Corillian/libgit2,Aorjoa/libgit2_maked_lib,jeffhostetler/public_libgit2,oaastest/libgit2,kenprice/libgit2,magnus98/TEST,leoyanggit/libgit2,yosefhackmon/libgit2,yosefhackmon/libgit2,oaastest/libgit2,sim0629/libgit2,since2014/libgit2,linquize/libgit2,Aorjoa/libgit2_maked_lib,Corillian/libgit2,Tousiph/Demo1,mcanthony/libgit2,mcanthony/libgit2,JIghtuse/libgit2,mingyaaaa/libgit2,mrksrm/Mingijura,spraints/libgit2,saurabhsuniljain/libgit2,amyvmiwei/libgit2,mingyaaaa/libgit2,leoyanggit/libgit2,whoisj/libgit2,jamieleecool/ptest,dleehr/libgit2,KTXSoftware/libgit2,kissthink/libgit2,linquize/libgit2,maxiaoqian/libgit2,ardumont/libgit2,whoisj/libgit2,joshtriplett/libgit2,yongthecoder/libgit2,JIghtuse/libgit2,claudelee/libgit2,kissthink/libgit2,magnus98/TEST,jamieleecool/ptest,kenprice/libgit2,chiayolin/libgit2,t0xicCode/libgit2,yongthecoder/libgit2,t0xicCode/libgit2,MrHacky/libgit2,swisspol/DEMO-libgit2,linquize/libgit2,claudelee/libgit2,Corillian/libgit2,JIghtuse/libgit2,mrksrm/Mingijura,saurabhsuniljain/libgit2,MrHacky/libgit2,nokiddin/libgit2,KTXSoftware/libgit2,oaastest/libgit2,oaastest/libgit2,jflesch/libgit2-mariadb,rcorre/libgit2,nokiddin/libgit2,jflesch/libgit2-mariadb,Snazz2001/libgit2,stewid/libgit2,Snazz2001/libgit2,sim0629/libgit2,sygool/libgit2,sim0629/libgit2,Tousiph/Demo1,whoisj/libgit2,nacho/libgit2,jflesch/libgit2-mariadb,iankronquist/libgit2,linquize/libgit2,Tousiph/Demo1,since2014/libgit2,yosefhackmon/libgit2,skabel/manguse,rcorre/libgit2,yosefhackmon/libgit2,rcorre/libgit2,mcanthony/libgit2,mhp/libgit2,maxiaoqian/libgit2,rcorre/libgit2,Corillian/libgit2,rcorre/libgit2,since2014/libgit2,MrHacky/libgit2,kenprice/libgit2,jeffhostetler/public_libgit2,leoyanggit/libgit2,zodiac/libgit2.js,nacho/libgit2,dleehr/libgit2,jflesch/libgit2-mariadb,amyvmiwei/libgit2,kissthink/libgit2,maxiaoqian/libgit2,sygool/libgit2,jeffhostetler/public_libgit2,falqas/libgit2,mrksrm/Mingijura,nokiddin/libgit2,kenprice/libgit2,KTXSoftware/libgit2,dleehr/libgit2,claudelee/libgit2,nacho/libgit2,Tousiph/Demo1,mingyaaaa/libgit2,swisspol/DEMO-libgit2,t0xicCode/libgit2,whoisj/libgit2,zodiac/libgit2.js,zodiac/libgit2.js,Snazz2001/libgit2,leoyanggit/libgit2,Tousiph/Demo1,KTXSoftware/libgit2,stewid/libgit2,mhp/libgit2,nokiddin/libgit2,iankronquist/libgit2,stewid/libgit2,falqas/libgit2,KTXSoftware/libgit2,kenprice/libgit2,evhan/libgit2,raybrad/libit2,t0xicCode/libgit2,amyvmiwei/libgit2,magnus98/TEST,saurabhsuniljain/libgit2,iankronquist/libgit2,stewid/libgit2,mingyaaaa/libgit2,spraints/libgit2,maxiaoqian/libgit2,joshtriplett/libgit2,falqas/libgit2,skabel/manguse,joshtriplett/libgit2,joshtriplett/libgit2,sygool/libgit2,Aorjoa/libgit2_maked_lib,since2014/libgit2,falqas/libgit2,Tousiph/Demo1,jflesch/libgit2-mariadb,oaastest/libgit2,ardumont/libgit2,Aorjoa/libgit2_maked_lib,Corillian/libgit2,amyvmiwei/libgit2,jeffhostetler/public_libgit2,zodiac/libgit2.js,chiayolin/libgit2,raybrad/libit2,spraints/libgit2,kissthink/libgit2,stewid/libgit2,skabel/manguse,spraints/libgit2,jflesch/libgit2-mariadb,ardumont/libgit2,iankronquist/libgit2,linquize/libgit2,Snazz2001/libgit2,sim0629/libgit2,chiayolin/libgit2,mhp/libgit2,skabel/manguse,sygool/libgit2