fix(NotificationDownloadListener): Crash on no-installer forge versions

Fixes #282

Author: alexytomi

app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/modpacks/api/NotificationDownloadListener.java

@@ -14,19 +14,20 @@
 
 public class NotificationDownloadListener implements ModloaderDownloadListener {
     private final Context mContext;
+    private final Intent mIntent;
     private final ModLoader mModLoader;
 
     public NotificationDownloadListener(Context context, ModLoader modLoader) {
         mModLoader = modLoader;
         mContext = context.getApplicationContext();
+        mIntent = new Intent(mContext, LauncherActivity.class);
     }
 
     @Override
     public void onDownloadFinished(File downloadedFile) {
         if(mModLoader.requiresGuiInstallation()) {
             ModloaderInstallTracker.saveModLoader(mContext, mModLoader, downloadedFile);
-            Intent mainActivityIntent = new Intent(mContext, LauncherActivity.class);
-            sendIntentNotification(mainActivityIntent, R.string.modpack_install_notification_success);
+            sendIntentNotification(R.string.modpack_install_notification_success);
         }
     }
 
@@ -40,11 +41,11 @@ public void onDownloadError(Exception e) {
         Tools.showErrorRemote(mContext, R.string.modpack_install_modloader_download_failed, e);
     }
 
-    private void sendIntentNotification(Intent intent, int localeString) {
+    private void sendIntentNotification(int localeString) {
         Tools.runOnUiThread(() -> NotificationUtils.sendBasicNotification(mContext,
                 R.string.modpack_install_notification_title,
                 localeString,
-                intent,
+                mIntent,
                 NotificationUtils.PENDINGINTENT_CODE_DOWNLOAD_SERVICE,
                 NotificationUtils.NOTIFICATION_ID_DOWNLOAD_LISTENER
         ));
@@ -54,7 +55,7 @@ private void sendEmptyNotification(int localeString) {
         Tools.runOnUiThread(()->NotificationUtils.sendBasicNotification(mContext,
                 R.string.modpack_install_notification_title,
                 localeString,
-                null,
+                mIntent,
                 NotificationUtils.PENDINGINTENT_CODE_DOWNLOAD_SERVICE,
                 NotificationUtils.NOTIFICATION_ID_DOWNLOAD_LISTENER
         ));