Fixing issue #3390
Fixing issue #3390

A transport op indicating a cancellation can be sent to the auth client
filter. In this case, the code should not assert that a context is not
null on this op.

simonkuang/grpc,thinkerou/grpc,rjshade/grpc,7anner/grpc,nicolasnoble/grpc,infinit/grpc,infinit/grpc,soltanmm/grpc,carl-mastrangelo/grpc,royalharsh/grpc,dklempner/grpc,jboeuf/grpc,dklempner/grpc,simonkuang/grpc,grpc/grpc,pmarks-net/grpc,carl-mastrangelo/grpc,MakMukhi/grpc,pmarks-net/grpc,a-veitch/grpc,jboeuf/grpc,thinkerou/grpc,kriswuollett/grpc,chrisdunelm/grpc,philcleveland/grpc,makdharma/grpc,ipylypiv/grpc,simonkuang/grpc,ipylypiv/grpc,firebase/grpc,soltanmm-google/grpc,matt-kwong/grpc,madongfly/grpc,chrisdunelm/grpc,quizlet/grpc,msiedlarek/grpc,a11r/grpc,tamihiro/grpc,yugui/grpc,andrewpollock/grpc,ofrobots/grpc,dgquintas/grpc,dklempner/grpc,msmania/grpc,mehrdada/grpc,rjshade/grpc,LuminateWireless/grpc,thinkerou/grpc,rjshade/grpc,dgquintas/grpc,vsco/grpc,soltanmm/grpc,LuminateWireless/grpc,vsco/grpc,nicolasnoble/grpc,VcamX/grpc,ctiller/grpc,ncteisen/grpc,kskalski/grpc,a-veitch/grpc,pmarks-net/grpc,dgquintas/grpc,bjori/grpc,maxwell-demon/grpc,jtattermusch/grpc,greasypizza/grpc,andrewpollock/grpc,ctiller/grpc,leifurhauks/grpc,baylabs/grpc,simonkuang/grpc,yongni/grpc,perumaalgoog/grpc,royalharsh/grpc,podsvirov/grpc,jcanizales/grpc,makdharma/grpc,ipylypiv/grpc,chrisdunelm/grpc,pmarks-net/grpc,vjpai/grpc,vsco/grpc,greasypizza/grpc,soltanmm/grpc,hstefan/grpc,grpc/grpc,greasypizza/grpc,msiedlarek/grpc,w4-sjcho/grpc,infinit/grpc,kumaralokgithub/grpc,yongni/grpc,wangyikai/grpc,donnadionne/grpc,yugui/grpc,arkmaxim/grpc,dklempner/grpc,arkmaxim/grpc,a11r/grpc,andrewpollock/grpc,mehrdada/grpc,VcamX/grpc,royalharsh/grpc,grani/grpc,soltanmm/grpc,wcevans/grpc,y-zeng/grpc,greasypizza/grpc,vjpai/grpc,thinkerou/grpc,bjori/grpc,vsco/grpc,tamihiro/grpc,fuchsia-mirror/third_party-grpc,bogdandrutu/grpc,donnadionne/grpc,geffzhang/grpc,ejona86/grpc,dgquintas/grpc,ctiller/grpc,stanley-cheung/grpc,miselin/grpc,sreecha/grpc,msmania/grpc,ofrobots/grpc,apolcyn/grpc,7anner/grpc,pszemus/grpc,fuchsia-mirror/third_party-grpc,LuminateWireless/grpc,bogdandrutu/grpc,zhimingxie/grpc,greasypizza/grpc,vsco/grpc,bjori/grpc,a11r/grpc,a11r/grpc,maxwell-demon/grpc,nicolasnoble/grpc,leifurhauks/grpc,ctiller/grpc,andrewpollock/grpc,kriswuollett/grpc,bjori/grpc,makdharma/grpc,arkmaxim/grpc,thunderboltsid/grpc,leifurhauks/grpc,MakMukhi/grpc,wangyikai/grpc,MakMukhi/grpc,yongni/grpc,apolcyn/grpc,ejona86/grpc,vsco/grpc,grpc/grpc,vjpai/grpc,yongni/grpc,fuchsia-mirror/third_party-grpc,maxwell-demon/grpc,philcleveland/grpc,kriswuollett/grpc,carl-mastrangelo/grpc,LuminateWireless/grpc,tengyifei/grpc,Crevil/grpc,msmania/grpc,infinit/grpc,Vizerai/grpc,firebase/grpc,grani/grpc,mehrdada/grpc,jcanizales/grpc,7anner/grpc,kskalski/grpc,rjshade/grpc,kskalski/grpc,nicolasnoble/grpc,Vizerai/grpc,VcamX/grpc,malexzx/grpc,nicolasnoble/grpc,ipylypiv/grpc,muxi/grpc,yugui/grpc,baylabs/grpc,ctiller/grpc,maxwell-demon/grpc,w4-sjcho/grpc,Crevil/grpc,madongfly/grpc,adelez/grpc,ejona86/grpc,murgatroid99/grpc,geffzhang/grpc,fuchsia-mirror/third_party-grpc,chrisdunelm/grpc,grpc/grpc,mehrdada/grpc,ncteisen/grpc,philcleveland/grpc,kpayson64/grpc,infinit/grpc,y-zeng/grpc,goldenbull/grpc,fuchsia-mirror/third_party-grpc,yang-g/grpc,maxwell-demon/grpc,thunderboltsid/grpc,dgquintas/grpc,sreecha/grpc,rjshade/grpc,daniel-j-born/grpc,w4-sjcho/grpc,wcevans/grpc,wangyikai/grpc,kumaralokgithub/grpc,simonkuang/grpc,madongfly/grpc,geffzhang/grpc,chrisdunelm/grpc,geffzhang/grpc,VcamX/grpc,a-veitch/grpc,miselin/grpc,vjpai/grpc,yugui/grpc,jcanizales/grpc,tamihiro/grpc,miselin/grpc,leifurhauks/grpc,kpayson64/grpc,tengyifei/grpc,kumaralokgithub/grpc,zhimingxie/grpc,ppietrasa/grpc,chrisdunelm/grpc,donnadionne/grpc,grani/grpc,thunderboltsid/grpc,sreecha/grpc,quizlet/grpc,ofrobots/grpc,quizlet/grpc,philcleveland/grpc,a-veitch/grpc,Vizerai/grpc,andrewpollock/grpc,goldenbull/grpc,zhimingxie/grpc,muxi/grpc,daniel-j-born/grpc,andrewpollock/grpc,podsvirov/grpc,ejona86/grpc,thunderboltsid/grpc,kriswuollett/grpc,zhimingxie/grpc,jcanizales/grpc,tamihiro/grpc,vjpai/grpc,adelez/grpc,deepaklukose/grpc,podsvirov/grpc,y-zeng/grpc,daniel-j-born/grpc,donnadionne/grpc,yang-g/grpc,goldenbull/grpc,stanley-cheung/grpc,Vizerai/grpc,simonkuang/grpc,madongfly/grpc,rjshade/grpc,stanley-cheung/grpc,Crevil/grpc,carl-mastrangelo/grpc,w4-sjcho/grpc,miselin/grpc,maxwell-demon/grpc,ananthonline/grpc,jcanizales/grpc,kskalski/grpc,murgatroid99/grpc,VcamX/grpc,kumaralokgithub/grpc,tengyifei/grpc,kpayson64/grpc,kumaralokgithub/grpc,apolcyn/grpc,ananthonline/grpc,thinkerou/grpc,thinkerou/grpc,ofrobots/grpc,wcevans/grpc,a11r/grpc,Crevil/grpc,geffzhang/grpc,andrewpollock/grpc,hstefan/grpc,makdharma/grpc,adelez/grpc,simonkuang/grpc,ipylypiv/grpc,madongfly/grpc,grani/grpc,carl-mastrangelo/grpc,deepaklukose/grpc,tengyifei/grpc,nicolasnoble/grpc,miselin/grpc,jboeuf/grpc,soltanmm-google/grpc,wcevans/grpc,daniel-j-born/grpc,kpayson64/grpc,ananthonline/grpc,jcanizales/grpc,ctiller/grpc,stanley-cheung/grpc,perumaalgoog/grpc,thunderboltsid/grpc,deepaklukose/grpc,adelez/grpc,pmarks-net/grpc,msiedlarek/grpc,grpc/grpc,kriswuollett/grpc,arkmaxim/grpc,ncteisen/grpc,podsvirov/grpc,perumaalgoog/grpc,zhimingxie/grpc,makdharma/grpc,y-zeng/grpc,chrisdunelm/grpc,ppietrasa/grpc,dklempner/grpc,grpc/grpc,VcamX/grpc,Crevil/grpc,jboeuf/grpc,PeterFaiman/ruby-grpc-minimal,hstefan/grpc,carl-mastrangelo/grpc,pmarks-net/grpc,Crevil/grpc,murgatroid99/grpc,hstefan/grpc,ncteisen/grpc,donnadionne/grpc,sreecha/grpc,makdharma/grpc,nicolasnoble/grpc,ofrobots/grpc,y-zeng/grpc,stanley-cheung/grpc,tamihiro/grpc,ejona86/grpc,dgquintas/grpc,chrisdunelm/grpc,muxi/grpc,ofrobots/grpc,quizlet/grpc,arkmaxim/grpc,grani/grpc,LuminateWireless/grpc,grani/grpc,muxi/grpc,quizlet/grpc,7anner/grpc,Vizerai/grpc,bjori/grpc,y-zeng/grpc,thunderboltsid/grpc,ctiller/grpc,pszemus/grpc,daniel-j-born/grpc,miselin/grpc,pszemus/grpc,kriswuollett/grpc,VcamX/grpc,jboeuf/grpc,ctiller/grpc,LuminateWireless/grpc,soltanmm-google/grpc,stanley-cheung/grpc,dklempner/grpc,geffzhang/grpc,stanley-cheung/grpc,donnadionne/grpc,firebase/grpc,wcevans/grpc,tengyifei/grpc,vjpai/grpc,msmania/grpc,jtattermusch/grpc,bjori/grpc,murgatroid99/grpc,muxi/grpc,goldenbull/grpc,quizlet/grpc,yang-g/grpc,sreecha/grpc,jtattermusch/grpc,miselin/grpc,zhimingxie/grpc,jtattermusch/grpc,pszemus/grpc,ppietrasa/grpc,wangyikai/grpc,VcamX/grpc,wcevans/grpc,jboeuf/grpc,perumaalgoog/grpc,tengyifei/grpc,madongfly/grpc,firebase/grpc,rjshade/grpc,podsvirov/grpc,zhimingxie/grpc,daniel-j-born/grpc,chrisdunelm/grpc,deepaklukose/grpc,kpayson64/grpc,grpc/grpc,firebase/grpc,tamihiro/grpc,stanley-cheung/grpc,msmania/grpc,baylabs/grpc,PeterFaiman/ruby-grpc-minimal,sreecha/grpc,grani/grpc,fuchsia-mirror/third_party-grpc,andrewpollock/grpc,ejona86/grpc,ananthonline/grpc,geffzhang/grpc,kskalski/grpc,kskalski/grpc,baylabs/grpc,makdharma/grpc,thinkerou/grpc,ppietrasa/grpc,nicolasnoble/grpc,murgatroid99/grpc,ejona86/grpc,infinit/grpc,VcamX/grpc,MakMukhi/grpc,nicolasnoble/grpc,yang-g/grpc,baylabs/grpc,bogdandrutu/grpc,donnadionne/grpc,arkmaxim/grpc,fuchsia-mirror/third_party-grpc,perumaalgoog/grpc,adelez/grpc,bogdandrutu/grpc,tamihiro/grpc,dgquintas/grpc,miselin/grpc,kumaralokgithub/grpc,ncteisen/grpc,dgquintas/grpc,LuminateWireless/grpc,hstefan/grpc,kpayson64/grpc,donnadionne/grpc,MakMukhi/grpc,deepaklukose/grpc,msmania/grpc,greasypizza/grpc,rjshade/grpc,yang-g/grpc,murgatroid99/grpc,carl-mastrangelo/grpc,dgquintas/grpc,msiedlarek/grpc,malexzx/grpc,ncteisen/grpc,grpc/grpc,nicolasnoble/grpc,wangyikai/grpc,donnadionne/grpc,jcanizales/grpc,PeterFaiman/ruby-grpc-minimal,7anner/grpc,malexzx/grpc,baylabs/grpc,stanley-cheung/grpc,ppietrasa/grpc,mehrdada/grpc,wangyikai/grpc,vsco/grpc,deepaklukose/grpc,soltanmm/grpc,ppietrasa/grpc,kpayson64/grpc,a11r/grpc,sreecha/grpc,ipylypiv/grpc,matt-kwong/grpc,wangyikai/grpc,vsco/grpc,andrewpollock/grpc,leifurhauks/grpc,carl-mastrangelo/grpc,royalharsh/grpc,kriswuollett/grpc,apolcyn/grpc,firebase/grpc,ncteisen/grpc,soltanmm-google/grpc,kskalski/grpc,infinit/grpc,yongni/grpc,chrisdunelm/grpc,dklempner/grpc,yang-g/grpc,pmarks-net/grpc,donnadionne/grpc,msmania/grpc,w4-sjcho/grpc,malexzx/grpc,podsvirov/grpc,tamihiro/grpc,w4-sjcho/grpc,leifurhauks/grpc,baylabs/grpc,donnadionne/grpc,malexzx/grpc,ctiller/grpc,vjpai/grpc,ncteisen/grpc,carl-mastrangelo/grpc,MakMukhi/grpc,jboeuf/grpc,y-zeng/grpc,Vizerai/grpc,dklempner/grpc,goldenbull/grpc,hstefan/grpc,baylabs/grpc,Crevil/grpc,deepaklukose/grpc,baylabs/grpc,maxwell-demon/grpc,makdharma/grpc,pszemus/grpc,mehrdada/grpc,LuminateWireless/grpc,matt-kwong/grpc,yugui/grpc,kriswuollett/grpc,grpc/grpc,thinkerou/grpc,yugui/grpc,7anner/grpc,philcleveland/grpc,stanley-cheung/grpc,malexzx/grpc,Vizerai/grpc,matt-kwong/grpc,madongfly/grpc,thunderboltsid/grpc,adelez/grpc,ncteisen/grpc,grani/grpc,soltanmm/grpc,dgquintas/grpc,bogdandrutu/grpc,jcanizales/grpc,perumaalgoog/grpc,soltanmm-google/grpc,a-veitch/grpc,yongni/grpc,jboeuf/grpc,a-veitch/grpc,ipylypiv/grpc,pszemus/grpc,ppietrasa/grpc,royalharsh/grpc,yang-g/grpc,jboeuf/grpc,vjpai/grpc,matt-kwong/grpc,a11r/grpc,w4-sjcho/grpc,PeterFaiman/ruby-grpc-minimal,pszemus/grpc,7anner/grpc,ananthonline/grpc,royalharsh/grpc,7anner/grpc,zhimingxie/grpc,royalharsh/grpc,PeterFaiman/ruby-grpc-minimal,a-veitch/grpc,PeterFaiman/ruby-grpc-minimal,goldenbull/grpc,grpc/grpc,MakMukhi/grpc,PeterFaiman/ruby-grpc-minimal,msmania/grpc,soltanmm-google/grpc,carl-mastrangelo/grpc,murgatroid99/grpc,msiedlarek/grpc,ctiller/grpc,matt-kwong/grpc,ofrobots/grpc,PeterFaiman/ruby-grpc-minimal,bjori/grpc,w4-sjcho/grpc,muxi/grpc,simonkuang/grpc,ctiller/grpc,ejona86/grpc,kpayson64/grpc,Vizerai/grpc,ananthonline/grpc,bogdandrutu/grpc,kskalski/grpc,maxwell-demon/grpc,mehrdada/grpc,sreecha/grpc,soltanmm-google/grpc,msiedlarek/grpc,apolcyn/grpc,kpayson64/grpc,grani/grpc,matt-kwong/grpc,jtattermusch/grpc,adelez/grpc,ipylypiv/grpc,soltanmm-google/grpc,mehrdada/grpc,msiedlarek/grpc,royalharsh/grpc,chrisdunelm/grpc,vsco/grpc,malexzx/grpc,sreecha/grpc,PeterFaiman/ruby-grpc-minimal,grpc/grpc,daniel-j-born/grpc,jcanizales/grpc,firebase/grpc,greasypizza/grpc,kumaralokgithub/grpc,7anner/grpc,LuminateWireless/grpc,thinkerou/grpc,dklempner/grpc,stanley-cheung/grpc,jtattermusch/grpc,perumaalgoog/grpc,hstefan/grpc,infinit/grpc,perumaalgoog/grpc,geffzhang/grpc,ejona86/grpc,hstefan/grpc,perumaalgoog/grpc,yongni/grpc,stanley-cheung/grpc,ipylypiv/grpc,arkmaxim/grpc,thunderboltsid/grpc,Crevil/grpc,muxi/grpc,jtattermusch/grpc,MakMukhi/grpc,ananthonline/grpc,podsvirov/grpc,philcleveland/grpc,bjori/grpc,goldenbull/grpc,vjpai/grpc,soltanmm/grpc,ppietrasa/grpc,thinkerou/grpc,ananthonline/grpc,ppietrasa/grpc,apolcyn/grpc,muxi/grpc,carl-mastrangelo/grpc,yang-g/grpc,thinkerou/grpc,apolcyn/grpc,donnadionne/grpc,greasypizza/grpc,mehrdada/grpc,nicolasnoble/grpc,murgatroid99/grpc,kumaralokgithub/grpc,daniel-j-born/grpc,mehrdada/grpc,malexzx/grpc,apolcyn/grpc,miselin/grpc,yugui/grpc,kumaralokgithub/grpc,leifurhauks/grpc,arkmaxim/grpc,a11r/grpc,grpc/grpc,vjpai/grpc,soltanmm-google/grpc,ncteisen/grpc,pszemus/grpc,arkmaxim/grpc,jtattermusch/grpc,philcleveland/grpc,muxi/grpc,kpayson64/grpc,murgatroid99/grpc,nicolasnoble/grpc,pszemus/grpc,pszemus/grpc,carl-mastrangelo/grpc,PeterFaiman/ruby-grpc-minimal,jtattermusch/grpc,ofrobots/grpc,sreecha/grpc,thunderboltsid/grpc,ejona86/grpc,msmania/grpc,apolcyn/grpc,msiedlarek/grpc,jboeuf/grpc,leifurhauks/grpc,podsvirov/grpc,bogdandrutu/grpc,wcevans/grpc,bogdandrutu/grpc,pszemus/grpc,muxi/grpc,yugui/grpc,deepaklukose/grpc,tengyifei/grpc,wangyikai/grpc,muxi/grpc,matt-kwong/grpc,ncteisen/grpc,a11r/grpc,dgquintas/grpc,thinkerou/grpc,philcleveland/grpc,ofrobots/grpc,yugui/grpc,bogdandrutu/grpc,pmarks-net/grpc,ncteisen/grpc,msiedlarek/grpc,jboeuf/grpc,quizlet/grpc,simonkuang/grpc,yang-g/grpc,MakMukhi/grpc,pszemus/grpc,ejona86/grpc,fuchsia-mirror/third_party-grpc,greasypizza/grpc,yongni/grpc,daniel-j-born/grpc,Vizerai/grpc,quizlet/grpc,jtattermusch/grpc,soltanmm/grpc,geffzhang/grpc,Crevil/grpc,adelez/grpc,a-veitch/grpc,ctiller/grpc,pmarks-net/grpc,muxi/grpc,w4-sjcho/grpc,kpayson64/grpc,wcevans/grpc,tengyifei/grpc,mehrdada/grpc,mehrdada/grpc,makdharma/grpc,philcleveland/grpc,bjori/grpc,podsvirov/grpc,infinit/grpc,malexzx/grpc,goldenbull/grpc,quizlet/grpc,matt-kwong/grpc,wcevans/grpc,firebase/grpc,soltanmm/grpc,sreecha/grpc,fuchsia-mirror/third_party-grpc,leifurhauks/grpc,y-zeng/grpc,firebase/grpc,fuchsia-mirror/third_party-grpc,sreecha/grpc,tengyifei/grpc,goldenbull/grpc,murgatroid99/grpc,Vizerai/grpc,jtattermusch/grpc,a-veitch/grpc,firebase/grpc,madongfly/grpc,y-zeng/grpc,zhimingxie/grpc,maxwell-demon/grpc,vjpai/grpc,firebase/grpc,firebase/grpc,ananthonline/grpc,yongni/grpc,wangyikai/grpc,madongfly/grpc,rjshade/grpc,deepaklukose/grpc,kskalski/grpc,adelez/grpc,hstefan/grpc,tamihiro/grpc,kriswuollett/grpc,Vizerai/grpc,ejona86/grpc,jtattermusch/grpc,vjpai/grpc,royalharsh/grpc,jboeuf/grpc