[Pgpool-committers] pgpool - pgpool-II: Fix write_pid_file.

[User T-ishii]

Log Message:
-----------
Fix write_pid_file. It forgot to write out NULL termination of
pid. Pgpool occasionally won't stop because of this bug.

Modified Files:
--------------
    pgpool-II:
        main.c (r1.51 -> r1.52)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/main.c?r1=1.51&r2=1.52)