Show seek bar only when action bar is shown

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

@@ -389,10 +389,12 @@ public class FragmentMessages extends FragmentBase {
 
                 @Override
                 public void onFound(int position, int size) {
+                    if (actionbar) {
                         seekBar.setProgress(position);
                         seekBar.setMax(size - 1);
                         seekBar.setVisibility(View.VISIBLE);
                     }
+                }
             });
 
             ActivityBase activity = (ActivityBase) getActivity();