winemac: Reenable window autodisplay when the frame is set and redisplayed.

Cocoa will draw the window frame immediately but if autodisplay of its content
view is disabled, that may leave the content area black briefly.  This change
avoids that flicker.

Signed-off-by: Ken Thomases <ken@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dlls/winemac.drv/cocoa_window.m

@@ -2456,6 +2456,20 @@ - (void) displayIfNeeded
             [self setAutodisplay:NO];
     }
 
+    - (void) setFrame:(NSRect)frameRect display:(BOOL)flag
+    {
+        if (flag)
+            [self setAutodisplay:YES];
+        [super setFrame:frameRect display:flag];
+    }
+
+    - (void) setFrame:(NSRect)frameRect display:(BOOL)displayFlag animate:(BOOL)animateFlag
+    {
+        if (displayFlag)
+            [self setAutodisplay:YES];
+        [super setFrame:frameRect display:displayFlag animate:animateFlag];
+    }
+
     - (void) windowDidDrawContent
     {
         if (!drawnSinceShown)