Fixed crash

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

@@ -2740,6 +2740,7 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
                     @Override
                     public void run() {
                         if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
+                            if (!rvMessage.isComputingLayout())
                                 adapter.checkInternet();
                     }
                 });