MacOSX/VLC_app/VLCMainWindow.m: Fix playlist showing.

extras/MacOSX/VLC_app/Sources/VLCMainWindow.m

@@ -322,7 +322,7 @@
     {
         /* Hide the navigator view (playlist view) */
         navigatorHeight = [navigatorView bounds].size.height;
-        [[self animator] setContentHeight:[mainSplitView bounds].size.height - navigatorHeight + [mainSplitView dividerThickness]];
+        [[self animator] setContentHeight:[mainSplitView bounds].origin.y + [mainSplitView bounds].size.height - navigatorHeight];
         /* Hack, because sliding cause some glitches */
         [navigatorView moveSubviewsToVisible];
     }