Add permission callback to preference fragment

src/org/thoughtcrime/securesms/RecipientPreferenceActivity.java

@@ -283,6 +283,11 @@ public class RecipientPreferenceActivity extends PassphraseRequiredActionBarActi
       addPreferencesFromResource(R.xml.recipient_preferences);
     }
 
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
+      Permissions.onRequestPermissionsResult(this, requestCode, permissions, grantResults);
+    }
+
     @Override
     public void onResume() {
       super.onResume();