Fix Dominator memory leak with explicit sub.connection.Close() call.
Fix Dominator memory leak with explicit sub.connection.Close() call.

rgooch/Dominator,Symantec/Dominator,Symantec/Dominator,keep94/Dominator,keep94/Dominator,rgooch/Dominator,Symantec/Dominator,keep94/Dominator,rgooch/Dominator