[mutter] monitor-manager/x11: Don't complain about 'normal' transform

[Jonas Ådahl <jadahl src gnome org>]

commit ab04286c6b800b8741fd7bcb7d56d6248c3dad5d
Author: Jonas Ådahl <jadahl gmail com>
Date:   Fri Mar 24 16:12:51 2017 +0800

    monitor-manager/x11: Don't complain about 'normal' transform
    
    The 'normal' transform has the value 0, so the g_warn_if_fail()
    expression failed. Correct it so that it doesn't complain when no
    transform is checked.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=777732

 src/backends/x11/meta-monitor-manager-xrandr.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/backends/x11/meta-monitor-manager-xrandr.c b/src/backends/x11/meta-monitor-manager-xrandr.c
index ed4b841..7384264 100644
--- a/src/backends/x11/meta-monitor-manager-xrandr.c
+++ b/src/backends/x11/meta-monitor-manager-xrandr.c
@@ -1774,7 +1774,7 @@ meta_monitor_manager_xrandr_is_transform_handled (MetaMonitorManager  *manager,
                                                   MetaCrtc            *crtc,
                                                   MetaMonitorTransform transform)
 {
-  g_warn_if_fail (crtc->all_transforms & transform);
+  g_warn_if_fail ((crtc->all_transforms & transform) == transform);
 
   return TRUE;
 }