Fix debugger connection not establishing.
Fix debugger connection not establishing.

Non-blocking socket listener function was not returning the socket and
address. Introduced this when I moved the listener into its own function
and didn't test my work :)

mispencer/vdebug,Taluu/vdebug,benjifisher/vdebug,tjwallis/vim,coffeine-009/vdebug,benjifisher/vdebug,paprykarz/vdebug,sumyfly/vdebug,AndBicScadMedia/vdebug,benjifisher/vdebug,coffeine-009/vdebug,tjwallis/vim,sumyfly/vdebug,AndBicScadMedia/vdebug,jerray/vdebug,joonty/vdebug,joonty/vdebug,jerray/vdebug,Taluu/vdebug,jerray/vdebug,joonty/vdebug,sumyfly/vdebug,tjwallis/vim,coffeine-009/vdebug,mispencer/vdebug,Taluu/vdebug,mispencer/vdebug,tjwallis/vim,tjwallis/vim,paprykarz/vdebug,AndBicScadMedia/vdebug,paprykarz/vdebug