[gtk+/wip/gdk-gl] gdk/x11: Plug a leak in create_gl_context()

[Emmanuele Bassi <ebassi src gnome org>]

commit 06bd4aba2b400369c4b2a3771e85af3e827766b4
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Fri Aug 15 12:42:55 2014 +0100

    gdk/x11: Plug a leak in create_gl_context()
    
    The valid GdkGLPixelFormat is owned by the GdkGLContext using it.

 gdk/x11/gdkglcontext-x11.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gdk/x11/gdkglcontext-x11.c b/gdk/x11/gdkglcontext-x11.c
index 2e0dc5e..1c60ee8 100644
--- a/gdk/x11/gdkglcontext-x11.c
+++ b/gdk/x11/gdkglcontext-x11.c
@@ -696,6 +696,8 @@ gdk_x11_display_create_gl_context (GdkDisplay        *display,
   context->current_drawable = dummy_drawable;
   context->is_direct = is_direct;
 
+  g_object_unref (valid_format);
+
   return GDK_GL_CONTEXT (context);
 }