Log Message:
-----------
Correctly check for NULL return value when checking the environment for SESSIONNAME to determine if a Terminal Services
sessionis used.
This fixes the crash-before-install on Windows 2000 Professional and NT4 (!= TSE).
Modified Files:
--------------
pginst/ca:
pginstca.c (r1.34 -> r1.35)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/ca/pginstca.c.diff?r1=1.34&r2=1.35)