[gdk-pixbuf] io: Fix check if library is running inside build tree

[Bastien Nocera <hadess src gnome org>]

commit d6c285a5e47964ab73836169cf919b0fa7a26186
Author: Robert Ancell <robert ancell canonical com>
Date:   Mon Nov 17 15:35:54 2014 +1300

    io: Fix check if library is running inside build tree
    
    The existing check was missing the length of the string so instead of reading
    the end of the string it read the memory before it.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=733413

 gdk-pixbuf/gdk-pixbuf-io.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gdk-pixbuf/gdk-pixbuf-io.c b/gdk-pixbuf/gdk-pixbuf-io.c
index dfc2c29..ebfdbd3 100644
--- a/gdk-pixbuf/gdk-pixbuf-io.c
+++ b/gdk-pixbuf/gdk-pixbuf-io.c
@@ -350,7 +350,7 @@ correct_prefix (gchar **path)
       strncmp (*path, GDK_PIXBUF_PREFIX "\\", strlen (GDK_PIXBUF_PREFIX "\\")) == 0)
     {
           gchar *tem = NULL;
-      if (strlen(*path) > 5 && strncmp (*path - 5, ".libs", 5) == 0)
+      if (g_str_has_suffix (*path, ".libs"))
         {
           /* We are being run from inside the build tree, and shouldn't mess about. */
           return;