[mutter/wayland] MetaCursorTracker: fix uninitialized screen variable

[Giovanni Campagna <gcampagna src gnome org>]

commit a8f4651c725ff328be8a637a2ecce1fa2dacffeb
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Thu Mar 6 17:20:20 2014 +0100

    MetaCursorTracker: fix uninitialized screen variable
    
    We must call gdk_device_get_pointer() unconditionally, because
    that sets the GdkScreen argument we use to obtain the root window.

 src/core/meta-cursor-tracker.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/src/core/meta-cursor-tracker.c b/src/core/meta-cursor-tracker.c
index 250d07e..c718dd4 100644
--- a/src/core/meta-cursor-tracker.c
+++ b/src/core/meta-cursor-tracker.c
@@ -1076,8 +1076,7 @@ get_pointer_position_gdk (int         *x,
   gmanager = gdk_display_get_device_manager (gdk_display_get_default ());
   gdevice = gdk_device_manager_get_client_pointer (gmanager);
 
-  if (x || y)
-    gdk_device_get_position (gdevice, &gscreen, x, y);
+  gdk_device_get_position (gdevice, &gscreen, x, y);
   if (mods)
     gdk_device_get_state (gdevice,
                           gdk_screen_get_root_window (gscreen),