Prevent crash

app/src/main/java/eu/faircode/email/SimpleTask.java

@@ -325,9 +325,13 @@ public abstract class SimpleTask<T> implements LifecycleObserver {
 
         int executing = getCount();
         Log.i("Remaining tasks=" + executing + "/" + tasks.size());
+        if (context == null)
+            Log.e("Context is null");
+        else {
             LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(context);
             lbm.sendBroadcast(new Intent(ACTION_TASK_COUNT).putExtra("count", executing));
         }
+    }
 
     protected void onPreExecute(Bundle args) {
     }