add missing responses

Change-Id: I2c24ea46b6e81ed02ae53da5e9ae1b7df85e44a1
Reviewed-on: https://gerrit.libreoffice.org/68454
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins
diff --git a/sc/uiconfig/scalc/ui/changesourcedialog.ui b/sc/uiconfig/scalc/ui/changesourcedialog.ui
index f492fe5..9f2e4c3 100644
--- a/sc/uiconfig/scalc/ui/changesourcedialog.ui
+++ b/sc/uiconfig/scalc/ui/changesourcedialog.ui
@@ -147,6 +147,8 @@
      </object>
    </child>
    <action-widgets>
      <action-widget response="-5">ok</action-widget>
      <action-widget response="-6">cancel</action-widget>
      <action-widget response="-11">help</action-widget>
    </action-widgets>
  </object>