[gtk/wip/chergert/quartz4u] darwin check

[Christian Hergert <chergert src gnome org>]

commit ec4026fcf6e8daa9525705cc1500047caf1e9911
Author: Christian Hergert <chergert redhat com>
Date:   Mon Apr 27 12:56:12 2020 -0700

    darwin check

 meson.build | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/meson.build b/meson.build
index c5c431a17a..75af273d9d 100644
--- a/meson.build
+++ b/meson.build
@@ -119,6 +119,7 @@ if os_darwin
   wayland_enabled = false
 else
   quartz_enabled = false
+  macos_enabled = false
 endif
 
 if os_win32