[gtk/wip/fanc999/gtk-3-24-meson-msvc: 52/297] Silence enum type warning in 10.9.

[Chun-wei Fan <fanchunwei src gnome org>]

commit f1d0419d309f05c7972df8205bb8f4df6c355815
Author: John Ralls <jralls ceridwen us>
Date:   Fri Dec 7 16:21:10 2018 -0800

    Silence enum type warning in 10.9.

 gdk/quartz/gdkwindow-quartz.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gdk/quartz/gdkwindow-quartz.c b/gdk/quartz/gdkwindow-quartz.c
index 9bb10bd20a..200c7018a9 100644
--- a/gdk/quartz/gdkwindow-quartz.c
+++ b/gdk/quartz/gdkwindow-quartz.c
@@ -3103,7 +3103,7 @@ gdk_root_window_impl_quartz_get_context (GdkWindowImplQuartz *window,
   colorspace = CGColorSpaceCreateWithName (kCGColorSpaceGenericRGB);
   cg_context = CGBitmapContextCreate (NULL,
                                       1, 1, 8, 4, colorspace,
-                                      kCGImageAlphaPremultipliedLast);
+                                      (CGBitmapInfo)kCGImageAlphaPremultipliedLast);
   CGColorSpaceRelease (colorspace);
 
   return cg_context;