[Pgpool-committers] pgpool - pgpool-II: Fix cancel_request() so that it adopts the change

[User T-ishii]

Log Message:
-----------
Fix cancel_request() so that it adopts the change made for 3.1
regarding UNIX domain socket name. Before we thought backend_port = ""
meant we should use UNIX domain socket, but now backend_port = "/"
means UNIX domain socket.

Modified Files:
--------------
    pgpool-II:
        child.c (r1.71 -> r1.72)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/child.c?r1=1.71&r2=1.72)