hide menu in non account vie

src/eu/alefzero/owncloud/ui/activity/FileDisplayActivity.java

@@ -104,9 +104,12 @@ public class FileDisplayActivity extends SherlockFragmentActivity implements
 
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
-        MenuInflater inflater = getSherlock().getMenuInflater();
-        inflater.inflate(R.menu.menu, menu);
-        return true;
+        if (accountsAreSetup()) {
+            MenuInflater inflater = getSherlock().getMenuInflater();
+            inflater.inflate(R.menu.menu, menu);
+            return true;
+        }
+        return false;
     }
 
     @Override