SaveState: Show warning on old / long use state.

Using save states instead of in game saves causes bugs in games, and
preserves bugs from bad settings and old PPSSPP versions.

This tells users when they might be affected.

Windows/MainWindowMenu.cpp

@@ -470,9 +470,9 @@ namespace MainWindow {
 		g_Config.iInternalScreenRotation = rotation;
 	}
 
-	static void SaveStateActionFinished(bool result, const std::string &message, void *userdata) {
+	static void SaveStateActionFinished(SaveState::Status status, const std::string &message, void *userdata) {
 		if (!message.empty()) {
-			osm.Show(message, 2.0);
+			osm.Show(message, status == SaveState::Status::SUCCESS ? 2.0 : 5.0);
 		}
 		PostMessage(MainWindow::GetHWND(), WM_USER_SAVESTATE_FINISH, 0, 0);
 	}