[gtk+/wip/chergert/quartz-frame-clock: 134/138] quartz: squash warning with explicit cast

[Christian Hergert <chergert src gnome org>]

commit 519e5a94d28a0f29caea433b50f6f515e5e2c411
Author: Christian Hergert <christian hergert me>
Date:   Wed Sep 30 18:30:02 2015 -0700

    quartz: squash warning with explicit cast

 gdk/quartz/GdkQuartzNSWindow.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gdk/quartz/GdkQuartzNSWindow.c b/gdk/quartz/GdkQuartzNSWindow.c
index 3445e3e..3927d9d 100644
--- a/gdk/quartz/GdkQuartzNSWindow.c
+++ b/gdk/quartz/GdkQuartzNSWindow.c
@@ -252,7 +252,7 @@
                              screen:screen];
 
   [self setAcceptsMouseMovedEvents:YES];
-  [self setDelegate:self];
+  [self setDelegate:(id)self];
   [self setReleasedWhenClosed:YES];
 
   return self;