vout_macosx: check whether the receiving window can respond to non-standard...

vout_macosx: check whether the receiving window can respond to non-standard calls prior to calling them (close #6034)

modules/video_output/macosx.m

@@ -315,10 +315,16 @@ static int Control (vout_display_t *vd, int query, va_list ap)
         case VOUT_DISPLAY_CHANGE_FULLSCREEN:
         {
             NSAutoreleasePool * o_pool = [[NSAutoreleasePool alloc] init];
+            id window = [sys->glView window];
+            if ([window respondsToSelector:@selector(updateFullscreen)])
+            {
                 [[sys->glView window] performSelectorOnMainThread:@selector(updateFullscreen) withObject: nil waitUntilDone:NO];
                 [o_pool release];
                 return VLC_SUCCESS;
             }
+            [o_pool release];
+            return VLC_EGENERIC;
+        }
         case VOUT_DISPLAY_CHANGE_WINDOW_STATE:
         {
             NSAutoreleasePool * o_pool = [[NSAutoreleasePool alloc] init];
@@ -560,11 +566,16 @@ static void OpenglSwap(vlc_gl_t *gl)
  */
 - (void)setWindowFrameWithValue:(NSValue *)value
 {
-    if (![[self window] isFullscreen])
-    {
+    id window = [self window];
     NSRect frame = [value rectValue];
-        [[self window] setFrame:frame display:YES animate: YES];
+
+    if ([window respondsToSelector:@selector(isFullscreen)])
+    {
+        if (!(BOOL)[[self window] isFullscreen])
+            [[self window] setFrame:frame display:YES animate:YES];
     }
+    else
+        [[self window] setFrame:frame display:YES animate:YES];
 }
 
 /**