Fix bugs in UV DNS resolver implementation
Fix bugs in UV DNS resolver implementation

muxi/grpc,kpayson64/grpc,philcleveland/grpc,jboeuf/grpc,quizlet/grpc,chrisdunelm/grpc,daniel-j-born/grpc,firebase/grpc,Crevil/grpc,kskalski/grpc,grani/grpc,nicolasnoble/grpc,chrisdunelm/grpc,ipylypiv/grpc,jboeuf/grpc,yongni/grpc,yang-g/grpc,7anner/grpc,yongni/grpc,kriswuollett/grpc,carl-mastrangelo/grpc,jboeuf/grpc,mehrdada/grpc,makdharma/grpc,fuchsia-mirror/third_party-grpc,kumaralokgithub/grpc,ncteisen/grpc,vjpai/grpc,grpc/grpc,ejona86/grpc,stanley-cheung/grpc,kumaralokgithub/grpc,ipylypiv/grpc,PeterFaiman/ruby-grpc-minimal,fuchsia-mirror/third_party-grpc,ncteisen/grpc,jtattermusch/grpc,dklempner/grpc,mehrdada/grpc,ejona86/grpc,vsco/grpc,murgatroid99/grpc,thinkerou/grpc,sreecha/grpc,rjshade/grpc,zhimingxie/grpc,jtattermusch/grpc,thinkerou/grpc,rjshade/grpc,7anner/grpc,baylabs/grpc,deepaklukose/grpc,jtattermusch/grpc,ipylypiv/grpc,carl-mastrangelo/grpc,a11r/grpc,dklempner/grpc,muxi/grpc,chrisdunelm/grpc,msmania/grpc,grani/grpc,zhimingxie/grpc,sreecha/grpc,quizlet/grpc,grani/grpc,mehrdada/grpc,vjpai/grpc,kskalski/grpc,makdharma/grpc,ejona86/grpc,apolcyn/grpc,Vizerai/grpc,grani/grpc,royalharsh/grpc,carl-mastrangelo/grpc,grpc/grpc,thinkerou/grpc,7anner/grpc,philcleveland/grpc,Vizerai/grpc,kpayson64/grpc,kpayson64/grpc,sreecha/grpc,thinkerou/grpc,MakMukhi/grpc,7anner/grpc,stanley-cheung/grpc,fuchsia-mirror/third_party-grpc,vjpai/grpc,dgquintas/grpc,daniel-j-born/grpc,royalharsh/grpc,deepaklukose/grpc,grpc/grpc,donnadionne/grpc,vjpai/grpc,murgatroid99/grpc,grani/grpc,thinkerou/grpc,jtattermusch/grpc,firebase/grpc,rjshade/grpc,ejona86/grpc,dgquintas/grpc,pszemus/grpc,dklempner/grpc,PeterFaiman/ruby-grpc-minimal,mehrdada/grpc,makdharma/grpc,yang-g/grpc,a11r/grpc,muxi/grpc,vjpai/grpc,murgatroid99/grpc,ncteisen/grpc,donnadionne/grpc,pszemus/grpc,mehrdada/grpc,mehrdada/grpc,dgquintas/grpc,baylabs/grpc,ctiller/grpc,geffzhang/grpc,Vizerai/grpc,zhimingxie/grpc,msmania/grpc,jtattermusch/grpc,adelez/grpc,quizlet/grpc,muxi/grpc,vjpai/grpc,fuchsia-mirror/third_party-grpc,jtattermusch/grpc,simonkuang/grpc,deepaklukose/grpc,jboeuf/grpc,matt-kwong/grpc,grpc/grpc,kpayson64/grpc,ejona86/grpc,simonkuang/grpc,kpayson64/grpc,dgquintas/grpc,muxi/grpc,kriswuollett/grpc,vsco/grpc,grani/grpc,simonkuang/grpc,ctiller/grpc,dklempner/grpc,daniel-j-born/grpc,PeterFaiman/ruby-grpc-minimal,ncteisen/grpc,adelez/grpc,apolcyn/grpc,hstefan/grpc,philcleveland/grpc,ncteisen/grpc,geffzhang/grpc,vjpai/grpc,firebase/grpc,hstefan/grpc,dklempner/grpc,dklempner/grpc,MakMukhi/grpc,murgatroid99/grpc,kskalski/grpc,pszemus/grpc,sreecha/grpc,adelez/grpc,murgatroid99/grpc,Vizerai/grpc,ejona86/grpc,apolcyn/grpc,geffzhang/grpc,simonkuang/grpc,kpayson64/grpc,royalharsh/grpc,deepaklukose/grpc,jboeuf/grpc,murgatroid99/grpc,jtattermusch/grpc,baylabs/grpc,ipylypiv/grpc,Crevil/grpc,geffzhang/grpc,donnadionne/grpc,jboeuf/grpc,royalharsh/grpc,pszemus/grpc,simonkuang/grpc,geffzhang/grpc,kumaralokgithub/grpc,kriswuollett/grpc,kskalski/grpc,7anner/grpc,pszemus/grpc,daniel-j-born/grpc,jtattermusch/grpc,carl-mastrangelo/grpc,matt-kwong/grpc,daniel-j-born/grpc,sreecha/grpc,fuchsia-mirror/third_party-grpc,adelez/grpc,msmania/grpc,pszemus/grpc,makdharma/grpc,zhimingxie/grpc,MakMukhi/grpc,matt-kwong/grpc,carl-mastrangelo/grpc,jtattermusch/grpc,vsco/grpc,hstefan/grpc,muxi/grpc,royalharsh/grpc,simonkuang/grpc,apolcyn/grpc,PeterFaiman/ruby-grpc-minimal,ipylypiv/grpc,sreecha/grpc,MakMukhi/grpc,fuchsia-mirror/third_party-grpc,7anner/grpc,ctiller/grpc,kumaralokgithub/grpc,Crevil/grpc,matt-kwong/grpc,ncteisen/grpc,jtattermusch/grpc,wcevans/grpc,baylabs/grpc,msmania/grpc,grpc/grpc,ctiller/grpc,matt-kwong/grpc,kumaralokgithub/grpc,jboeuf/grpc,Vizerai/grpc,pszemus/grpc,donnadionne/grpc,yang-g/grpc,ncteisen/grpc,MakMukhi/grpc,baylabs/grpc,dgquintas/grpc,msmania/grpc,muxi/grpc,thinkerou/grpc,apolcyn/grpc,thinkerou/grpc,7anner/grpc,wcevans/grpc,geffzhang/grpc,muxi/grpc,firebase/grpc,MakMukhi/grpc,jboeuf/grpc,chrisdunelm/grpc,apolcyn/grpc,ctiller/grpc,ipylypiv/grpc,makdharma/grpc,matt-kwong/grpc,vsco/grpc,pszemus/grpc,kpayson64/grpc,carl-mastrangelo/grpc,ctiller/grpc,ncteisen/grpc,ejona86/grpc,grpc/grpc,a11r/grpc,firebase/grpc,ipylypiv/grpc,quizlet/grpc,kumaralokgithub/grpc,kskalski/grpc,makdharma/grpc,carl-mastrangelo/grpc,PeterFaiman/ruby-grpc-minimal,muxi/grpc,murgatroid99/grpc,murgatroid99/grpc,baylabs/grpc,ctiller/grpc,dgquintas/grpc,ctiller/grpc,carl-mastrangelo/grpc,vsco/grpc,ncteisen/grpc,wcevans/grpc,thinkerou/grpc,grpc/grpc,deepaklukose/grpc,dklempner/grpc,Crevil/grpc,matt-kwong/grpc,vsco/grpc,stanley-cheung/grpc,kpayson64/grpc,Vizerai/grpc,jboeuf/grpc,PeterFaiman/ruby-grpc-minimal,grani/grpc,yang-g/grpc,vjpai/grpc,wcevans/grpc,jboeuf/grpc,sreecha/grpc,kskalski/grpc,rjshade/grpc,kumaralokgithub/grpc,ctiller/grpc,sreecha/grpc,philcleveland/grpc,kumaralokgithub/grpc,ncteisen/grpc,geffzhang/grpc,nicolasnoble/grpc,matt-kwong/grpc,dgquintas/grpc,daniel-j-born/grpc,nicolasnoble/grpc,zhimingxie/grpc,fuchsia-mirror/third_party-grpc,nicolasnoble/grpc,msmania/grpc,MakMukhi/grpc,matt-kwong/grpc,yang-g/grpc,ctiller/grpc,kriswuollett/grpc,baylabs/grpc,yongni/grpc,firebase/grpc,kriswuollett/grpc,vjpai/grpc,royalharsh/grpc,jtattermusch/grpc,Vizerai/grpc,philcleveland/grpc,Vizerai/grpc,simonkuang/grpc,Crevil/grpc,ipylypiv/grpc,vsco/grpc,deepaklukose/grpc,grpc/grpc,kpayson64/grpc,zhimingxie/grpc,firebase/grpc,ejona86/grpc,fuchsia-mirror/third_party-grpc,hstefan/grpc,thinkerou/grpc,nicolasnoble/grpc,7anner/grpc,adelez/grpc,muxi/grpc,Crevil/grpc,jtattermusch/grpc,nicolasnoble/grpc,dgquintas/grpc,apolcyn/grpc,deepaklukose/grpc,hstefan/grpc,a11r/grpc,thinkerou/grpc,PeterFaiman/ruby-grpc-minimal,yongni/grpc,adelez/grpc,ipylypiv/grpc,grpc/grpc,nicolasnoble/grpc,geffzhang/grpc,adelez/grpc,murgatroid99/grpc,makdharma/grpc,wcevans/grpc,grani/grpc,chrisdunelm/grpc,pszemus/grpc,wcevans/grpc,a11r/grpc,a11r/grpc,mehrdada/grpc,wcevans/grpc,sreecha/grpc,stanley-cheung/grpc,ctiller/grpc,kpayson64/grpc,thinkerou/grpc,vsco/grpc,grpc/grpc,philcleveland/grpc,grpc/grpc,quizlet/grpc,pszemus/grpc,Crevil/grpc,PeterFaiman/ruby-grpc-minimal,mehrdada/grpc,dklempner/grpc,kriswuollett/grpc,stanley-cheung/grpc,ejona86/grpc,donnadionne/grpc,quizlet/grpc,donnadionne/grpc,ncteisen/grpc,ejona86/grpc,yongni/grpc,royalharsh/grpc,kskalski/grpc,kskalski/grpc,fuchsia-mirror/third_party-grpc,wcevans/grpc,apolcyn/grpc,fuchsia-mirror/third_party-grpc,stanley-cheung/grpc,vjpai/grpc,carl-mastrangelo/grpc,kumaralokgithub/grpc,adelez/grpc,sreecha/grpc,philcleveland/grpc,carl-mastrangelo/grpc,kriswuollett/grpc,geffzhang/grpc,quizlet/grpc,rjshade/grpc,yongni/grpc,PeterFaiman/ruby-grpc-minimal,vjpai/grpc,philcleveland/grpc,stanley-cheung/grpc,ncteisen/grpc,donnadionne/grpc,kriswuollett/grpc,carl-mastrangelo/grpc,zhimingxie/grpc,msmania/grpc,dgquintas/grpc,donnadionne/grpc,kpayson64/grpc,yongni/grpc,mehrdada/grpc,simonkuang/grpc,yongni/grpc,stanley-cheung/grpc,muxi/grpc,dgquintas/grpc,kriswuollett/grpc,msmania/grpc,chrisdunelm/grpc,donnadionne/grpc,deepaklukose/grpc,MakMukhi/grpc,mehrdada/grpc,hstefan/grpc,yang-g/grpc,muxi/grpc,royalharsh/grpc,murgatroid99/grpc,grani/grpc,chrisdunelm/grpc,donnadionne/grpc,firebase/grpc,nicolasnoble/grpc,sreecha/grpc,makdharma/grpc,pszemus/grpc,Crevil/grpc,chrisdunelm/grpc,rjshade/grpc,a11r/grpc,daniel-j-born/grpc,nicolasnoble/grpc,zhimingxie/grpc,daniel-j-born/grpc,sreecha/grpc,nicolasnoble/grpc,jboeuf/grpc,yongni/grpc,Crevil/grpc,MakMukhi/grpc,Vizerai/grpc,grpc/grpc,vsco/grpc,dklempner/grpc,baylabs/grpc,firebase/grpc,a11r/grpc,jboeuf/grpc,ejona86/grpc,apolcyn/grpc,baylabs/grpc,rjshade/grpc,vjpai/grpc,yang-g/grpc,mehrdada/grpc,thinkerou/grpc,dgquintas/grpc,hstefan/grpc,wcevans/grpc,nicolasnoble/grpc,deepaklukose/grpc,Vizerai/grpc,quizlet/grpc,rjshade/grpc,zhimingxie/grpc,rjshade/grpc,nicolasnoble/grpc,donnadionne/grpc,stanley-cheung/grpc,simonkuang/grpc,daniel-j-born/grpc,chrisdunelm/grpc,stanley-cheung/grpc,chrisdunelm/grpc,stanley-cheung/grpc,hstefan/grpc,kskalski/grpc,donnadionne/grpc,7anner/grpc,adelez/grpc,firebase/grpc,stanley-cheung/grpc,makdharma/grpc,mehrdada/grpc,royalharsh/grpc,firebase/grpc,PeterFaiman/ruby-grpc-minimal,hstefan/grpc,yang-g/grpc,ejona86/grpc,a11r/grpc,quizlet/grpc,carl-mastrangelo/grpc,pszemus/grpc,ctiller/grpc,Vizerai/grpc,yang-g/grpc,firebase/grpc,msmania/grpc,philcleveland/grpc,chrisdunelm/grpc