Run start service on foreground

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

@@ -309,11 +309,14 @@ public class AdapterAttachment extends RecyclerView.Adapter<AdapterAttachment.Vi
                         db.endTransaction();
                     }
 
-                    ServiceSynchronize.eval(context, "attachment");
-
                     return null;
                 }
 
+                @Override
+                protected void onExecuted(Bundle args, Void data) {
+                    ServiceSynchronize.eval(context, "attachment");
+                }
+
                 @Override
                 protected void onException(Bundle args, Throwable ex) {
                     Log.unexpectedError(parentFragment.getParentFragmentManager(), ex);