Fixed restoring window size when coming out of fullscreen desktop mode.

Use the style of the window as it will be, not as it currently is at the
time of the AdjustWindowRect call.

src/video/windows/SDL_windowswindow.c

@@ -595,6 +595,8 @@ WIN_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * display,
             style &= ~WS_MAXIMIZE;
         }
     } else {
+        BOOL menu;
+
         /* Restore window-maximization state, as applicable.
            Special care is taken to *not* do this if and when we're
            alt-tab'ing away (to some other window; as indicated by
@@ -606,7 +608,8 @@ WIN_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * display,
             data->windowed_mode_was_maximized = SDL_FALSE;
         }
 
-        WIN_AdjustWindowRect(window, &x, &y, &w, &h, SDL_FALSE);
+        menu = (style & WS_CHILDWINDOW) ? FALSE : (GetMenu(hwnd) != NULL);
+        WIN_AdjustWindowRectWithStyle(window, style, menu, &x, &y, &w, &h, SDL_FALSE);
     }
     SetWindowLong(hwnd, GWL_STYLE, style);
     data->expected_resize = SDL_TRUE;