[glib] Don't call close() on -1

[Tor Lillqvist <tml src gnome org>]

commit 46390c9d107b6df55de458b3ffe47a5428d7f287
Author: Tor Lillqvist <tml iki fi>
Date:   Thu Oct 7 12:04:52 2010 +0300

    Don't call close() on -1
    
    Of course, a proper implementation of close() will just ignore an
    invalid parameter silently, and set errno. But apparently the "debug"
    version of the Microsoft C library generates some noise in this
    case. So avoid that. Thanks to John Emmas for reporting.

 tests/testglib.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/tests/testglib.c b/tests/testglib.c
index 7625928..b4e29f0 100644
--- a/tests/testglib.c
+++ b/tests/testglib.c
@@ -886,7 +886,8 @@ test_file_functions (void)
   fd = g_mkstemp (template);
   if (g_test_verbose() && fd != -1)
     g_print ("g_mkstemp works even if template doesn't end in XXXXXX\n");
-  close (fd);
+  if (fd != -1)
+    close (fd);
   strcpy (template, "fooXXXXXX");
   fd = g_mkstemp (template);
   if (fd == -1)