fix globalRPC goroutine leak
fix globalRPC goroutine leak

Signed-off-by: Wei Wei <2e5287ee40d2930b12ddf660ca99816edd7f2fd9@gmail.com>

youhong316/consul,vamage/consul,vamage/consul,scalp42/consul,youhong316/consul,42wim/consul,vamage/consul,calgaryscientific/consul,scalp42/consul,youhong316/consul,calgaryscientific/consul,vamage/consul,42wim/consul,kingland/consul,hashicorp/consul,i0rek/consul,vamage/consul,hashicorp/consul,calgaryscientific/consul,youhong316/consul,i0rek/consul,calgaryscientific/consul,kingland/consul,42wim/consul,kingland/consul,i0rek/consul,kingland/consul,scalp42/consul,42wim/consul,i0rek/consul,hashicorp/consul,hashicorp/consul,42wim/consul,scalp42/consul,scalp42/consul,youhong316/consul,kingland/consul,calgaryscientific/consul,i0rek/consul