pginstaller - pginst: Make sure all malloc() calls have return values

Log Message:
-----------
Make sure all malloc() calls have return values checked.

Fix incorrect size in ZeroMemory call causing crashes with really short names

Properly close database handle

Modified Files:
--------------
pginst/ca:
locale.c (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/ca/locale.c.diff?r1=1.3&r2=1.4)