[glib] tests: Fix GSList test to not dereference off the end of an array

[Philip Withnall <pwithnall src gnome org>]

commit f1eeb7cf8c14b30e6267ed6aa663c0f617f55693
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Sat Aug 13 10:29:31 2016 +0200

    tests: Fix GSList test to not dereference off the end of an array
    
    This looks like a typo or copypasta error. As spotted by cppcheck, which
    is the code analysis tool GLib deserves, but not the one it needs right
    now.

 glib/tests/slist.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/glib/tests/slist.c b/glib/tests/slist.c
index 482d76a..f1a8495 100644
--- a/glib/tests/slist.c
+++ b/glib/tests/slist.c
@@ -204,7 +204,7 @@ test_slist_remove_all (void)
 
   g_assert_cmpint (g_slist_length (slist), ==, 20);
 
-  for (i = 0; i < 10; i++)
+  for (i = 0; i < 5; i++)
     {
       slist = g_slist_remove_all (slist, &nums[2 * i + 1]);
       slist = g_slist_remove_all (slist, &nums[8 - 2 * i]);