Switch to upstream plume. (#1645)

UnleashedRecomp/ui/game_window.cpp

@@ -218,7 +218,7 @@ void GameWindow::Init(const char* sdlVideoDriver)
 #elif defined(__linux__)
     s_renderWindow = { info.info.x11.display, info.info.x11.window };
 #elif defined(__APPLE__)
-    s_renderWindow.window = s_pWindow;
+    s_renderWindow.window = info.info.cocoa.window;
     s_renderWindow.view = SDL_Metal_GetLayer(SDL_Metal_CreateView(s_pWindow));
 #else
     static_assert(false, "Unknown platform.");