pgsql: Win32 build cleanups, from Andrew Dunstan.

Log Message:
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Win32 build cleanups, from Andrew Dunstan.

Modified Files:
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pgsql/src/backend/port/dynloader:
win32.c (r1.3 -> r1.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/dynloader/win32.c.diff?r1=1.3&r2=1.4)
pgsql/src/backend/postmaster:
postmaster.c (r1.439 -> r1.440)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/postmaster.c.diff?r1=1.439&r2=1.440)
pgsql/src/port:
open.c (r1.5 -> r1.6)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/port/open.c.diff?r1=1.5&r2=1.6)