Fix a panic in handling forwarded queries
Fix a panic in handling forwarded queries

Signed-off-by: Santhosh Manohar <0806b0927a65802677e1bc58a740a42f957953d7@docker.com>

nawawi/docker,thaJeztah/docker,jthelin/docker,docker/docker,yosifkit/docker,nalind/docker,moby/moby,jimjag/docker,trebonian/docker,bearstech/moby,Mokolea/docker,jameszhan/docker,moby/moby,cpuguy83/docker,flavio/docker,bearstech/moby,nawawi/docker,konstruktoid/docker-upstream,AkihiroSuda/docker,djs55/docker,cpuguy83/docker,gnailuy/docker,thaJeztah/docker,Mokolea/docker,cpuguy83/docker,vdemeester/docker,djs55/docker,jimjag/docker,thaJeztah/docker,moul/docker,konstruktoid/docker-upstream,jimjag/docker,Ramzec/docker,mahak/docker,docker/docker,konstruktoid/docker-upstream,bearstech/moby,nawawi/docker,AkihiroSuda/docker,nalind/docker,vdemeester/docker,moby/moby,jimjag/docker,docker/docker,cpuguy83/docker,jameszhan/docker,Ramzec/docker,nawawi/docker,Ramzec/docker,Mokolea/docker,gnailuy/docker,paralin/docker,yosifkit/docker,mahak/docker,trebonian/docker,nalind/docker,mahak/docker,gnailuy/docker,yosifkit/docker,trebonian/docker,nalind/docker,flavio/docker,AkihiroSuda/docker,paralin/docker,paralin/docker,moul/docker,moul/docker,gnailuy/docker,moby/moby,paralin/docker,jthelin/docker,moul/docker,flavio/docker,vdemeester/docker,flavio/docker,AkihiroSuda/docker,thaJeztah/docker,konstruktoid/docker-upstream,jameszhan/docker,mahak/docker,Mokolea/docker,trebonian/docker,yosifkit/docker,bearstech/moby,Ramzec/docker,djs55/docker