[glib] Use g_unsetenv, not unsetenv

[Alexander Larsson <alexl src gnome org>]

commit d0635dac52b4a4dae535dd22940ed2adb6a89074
Author: Alexander Larsson <alexl redhat com>
Date:   Tue Mar 20 10:19:42 2012 +0100

    Use g_unsetenv, not unsetenv
    
    This fixed the win32 build

 glib/tests/logging.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/glib/tests/logging.c b/glib/tests/logging.c
index 8a6fe16..89005a8 100644
--- a/glib/tests/logging.c
+++ b/glib/tests/logging.c
@@ -261,7 +261,7 @@ bug653052 (void)
 int
 main (int argc, char *argv[])
 {
-  unsetenv ("G_MESSAGES_DEBUG");
+  g_unsetenv ("G_MESSAGES_DEBUG");
 
   g_test_init (&argc, &argv, NULL);
   g_test_bug_base ("http://bugzilla.gnome.org/";);