Prevent crash

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

@@ -12,6 +12,15 @@ import static android.app.Activity.RESULT_CANCELED;
 public class DialogFragmentEx extends DialogFragment {
     private boolean once = false;
 
+    @Override
+    public void onStart() {
+        try {
+            super.onStart();
+        } catch (Throwable ex) {
+            Log.e(ex);
+        }
+    }
+
     @Override
     public void onDismiss(@NonNull DialogInterface dialog) {
         sendResult(RESULT_CANCELED);