Log Message:
-----------
Fix SIGSEGV under parallel mode.
Modified Files:
--------------
pgpool-II/parser:
pool_memory.c (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/parser/pool_memory.c.diff?r1=1.3&r2=1.4)