ssh: move NULL check to the free function
ssh: move NULL check to the free function

Let `ssh_stream_free()` take a NULL stream, as free functions should,
and remove the check from the connection setup.

The connection setup would not need the check anyhow, as we always have
a stream by the time we reach this code.

Corillian/libgit2,stewid/libgit2,dleehr/libgit2,sygool/libgit2,kenprice/libgit2,spraints/libgit2,dleehr/libgit2,kissthink/libgit2,JIghtuse/libgit2,kissthink/libgit2,MrHacky/libgit2,ardumont/libgit2,ardumont/libgit2,Corillian/libgit2,kenprice/libgit2,mhp/libgit2,saurabhsuniljain/libgit2,iankronquist/libgit2,mhp/libgit2,jeffhostetler/public_libgit2,kenprice/libgit2,magnus98/TEST,JIghtuse/libgit2,mcanthony/libgit2,kenprice/libgit2,MrHacky/libgit2,kissthink/libgit2,Corillian/libgit2,saurabhsuniljain/libgit2,Corillian/libgit2,mingyaaaa/libgit2,skabel/manguse,yongthecoder/libgit2,t0xicCode/libgit2,magnus98/TEST,sim0629/libgit2,Tousiph/Demo1,mingyaaaa/libgit2,Corillian/libgit2,mrksrm/Mingijura,iankronquist/libgit2,KTXSoftware/libgit2,sygool/libgit2,stewid/libgit2,iankronquist/libgit2,amyvmiwei/libgit2,nokiddin/libgit2,saurabhsuniljain/libgit2,leoyanggit/libgit2,mingyaaaa/libgit2,spraints/libgit2,stewid/libgit2,mingyaaaa/libgit2,since2014/libgit2,linquize/libgit2,kissthink/libgit2,claudelee/libgit2,joshtriplett/libgit2,sim0629/libgit2,sygool/libgit2,spraints/libgit2,amyvmiwei/libgit2,claudelee/libgit2,KTXSoftware/libgit2,nokiddin/libgit2,yosefhackmon/libgit2,JIghtuse/libgit2,magnus98/TEST,amyvmiwei/libgit2,dleehr/libgit2,magnus98/TEST,t0xicCode/libgit2,oaastest/libgit2,yongthecoder/libgit2,stewid/libgit2,yosefhackmon/libgit2,skabel/manguse,spraints/libgit2,iankronquist/libgit2,claudelee/libgit2,oaastest/libgit2,saurabhsuniljain/libgit2,jeffhostetler/public_libgit2,ardumont/libgit2,claudelee/libgit2,nokiddin/libgit2,jeffhostetler/public_libgit2,amyvmiwei/libgit2,ardumont/libgit2,yongthecoder/libgit2,t0xicCode/libgit2,yongthecoder/libgit2,skabel/manguse,nokiddin/libgit2,dleehr/libgit2,oaastest/libgit2,yongthecoder/libgit2,kenprice/libgit2,sim0629/libgit2,MrHacky/libgit2,KTXSoftware/libgit2,dleehr/libgit2,leoyanggit/libgit2,MrHacky/libgit2,falqas/libgit2,JIghtuse/libgit2,mcanthony/libgit2,kenprice/libgit2,mingyaaaa/libgit2,since2014/libgit2,mrksrm/Mingijura,leoyanggit/libgit2,oaastest/libgit2,falqas/libgit2,saurabhsuniljain/libgit2,saurabhsuniljain/libgit2,mhp/libgit2,Tousiph/Demo1,t0xicCode/libgit2,since2014/libgit2,mrksrm/Mingijura,skabel/manguse,iankronquist/libgit2,Tousiph/Demo1,sim0629/libgit2,joshtriplett/libgit2,skabel/manguse,kissthink/libgit2,KTXSoftware/libgit2,mhp/libgit2,mcanthony/libgit2,mrksrm/Mingijura,Tousiph/Demo1,falqas/libgit2,joshtriplett/libgit2,Tousiph/Demo1,yongthecoder/libgit2,ardumont/libgit2,linquize/libgit2,since2014/libgit2,oaastest/libgit2,yosefhackmon/libgit2,kissthink/libgit2,sim0629/libgit2,leoyanggit/libgit2,joshtriplett/libgit2,stewid/libgit2,oaastest/libgit2,amyvmiwei/libgit2,magnus98/TEST,ardumont/libgit2,skabel/manguse,joshtriplett/libgit2,since2014/libgit2,yosefhackmon/libgit2,t0xicCode/libgit2,falqas/libgit2,spraints/libgit2,mrksrm/Mingijura,mcanthony/libgit2,MrHacky/libgit2,linquize/libgit2,claudelee/libgit2,stewid/libgit2,JIghtuse/libgit2,sygool/libgit2,leoyanggit/libgit2,since2014/libgit2,mcanthony/libgit2,falqas/libgit2,yosefhackmon/libgit2,nokiddin/libgit2,mhp/libgit2,mhp/libgit2,linquize/libgit2,linquize/libgit2,linquize/libgit2,t0xicCode/libgit2,MrHacky/libgit2,leoyanggit/libgit2,sim0629/libgit2,Corillian/libgit2,magnus98/TEST,jeffhostetler/public_libgit2,dleehr/libgit2,yosefhackmon/libgit2,mingyaaaa/libgit2,mrksrm/Mingijura,sygool/libgit2,nokiddin/libgit2,joshtriplett/libgit2,falqas/libgit2,Tousiph/Demo1,KTXSoftware/libgit2,amyvmiwei/libgit2,sygool/libgit2,jeffhostetler/public_libgit2,jeffhostetler/public_libgit2,mcanthony/libgit2,JIghtuse/libgit2,KTXSoftware/libgit2,iankronquist/libgit2,claudelee/libgit2,spraints/libgit2