Force recreation of X11 window if going to or from a SDL_NOFRAME vidmode.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40868

src/video/x11/SDL_x11video.c

@@ -942,8 +942,9 @@ SDL_Surface *X11_SetVideoMode(_THIS, SDL_Surface *current,
 
 	/* Set up the X11 window */
 	saved_flags = current->flags;
-	if (SDL_Window && (saved_flags&SDL_OPENGL) == (flags&SDL_OPENGL)
-	    && bpp == current->format->BitsPerPixel) {
+	if ( (SDL_Window) && ((saved_flags&SDL_OPENGL) == (flags&SDL_OPENGL))
+	      && (bpp == current->format->BitsPerPixel)
+          && ((saved_flags&SDL_NOFRAME) == (flags&SDL_NOFRAME)) ) {
 		if (X11_ResizeWindow(this, current, width, height, flags) < 0) {
 			current = NULL;
 			goto done;