[gtk+] Allow x and y to be NULL in gdk_window_get_geometry

[Alexander Larsson <alexl src gnome org>]

commit 858e6bcd658b060757cc88d8106518540ec432b8
Author: Alexander Larsson <alexl redhat com>
Date:   Thu Aug 27 13:34:00 2009 +0200

    Allow x and y to be NULL in gdk_window_get_geometry
    
    Fixes a crash reported in bug #593249

 gdk/gdkwindow.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 0831704..fa8e63c 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -7368,8 +7368,10 @@ gdk_window_get_geometry (GdkWindow *window,
 	  parent = private->parent;
 	  if (parent && !gdk_window_has_impl (parent))
 	    {
-	      *x -= parent->abs_x;
-	      *y -= parent->abs_y;
+	      if (x)
+		*x -= parent->abs_x;
+	      if (y)
+		*y -= parent->abs_y;
 	    }
 	}
       else