[gtk/gtk-3-24] Silence compiler type warnings about converting enums to gboolean.

[John Ralls <jralls src gnome org>]

commit a12931b9f8ed944a4c2680b3e2b387e983fd98b0
Author: John Ralls <jralls ceridwen us>
Date:   Fri Jul 26 15:29:03 2019 -0700

    Silence compiler type warnings about converting enums to gboolean.

 gdk/quartz/gdkwindow-quartz.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gdk/quartz/gdkwindow-quartz.c b/gdk/quartz/gdkwindow-quartz.c
index e991ccdb2d..8a524d9da4 100644
--- a/gdk/quartz/gdkwindow-quartz.c
+++ b/gdk/quartz/gdkwindow-quartz.c
@@ -2719,7 +2719,7 @@ window_is_fullscreen (GdkWindow *window)
     return ([impl->toplevel styleMask] & GDK_QUARTZ_FULLSCREEN_WINDOW) != 0;
   else
 #endif
-    return g_object_get_data (G_OBJECT (window), FULLSCREEN_DATA);
+    return g_object_get_data (G_OBJECT (window), FULLSCREEN_DATA) != NULL;
 }
 
 static void
@@ -2859,7 +2859,7 @@ _gdk_quartz_window_update_fullscreen_state (GdkWindow *window)
     {
       gboolean is_fullscreen = window_is_fullscreen (window);
       gboolean was_fullscreen = (gdk_window_get_state (window) &&
-                                 GDK_WINDOW_STATE_FULLSCREEN) != 0;
+                                 GDK_WINDOW_STATE_FULLSCREEN != 0);
 
       if (is_fullscreen != was_fullscreen)
         {