Menu's dispose needs non-zero ref count, tdf#100829

Change-Id: Ie1db4aa8ab2487b9ef058478a2f86d43cf8eba41

sfx2/source/doc/templatedlg.cxx

@@ -286,8 +286,8 @@ void SfxTemplateManagerDlg::dispose()
     mpActionBar.clear();
     mpSearchView.clear();
     mpLocalView.clear();
-    mpActionMenu.clear();
-    mpTemplateDefaultMenu.clear();
+    mpActionMenu.disposeAndClear();
+    mpTemplateDefaultMenu.disposeAndClear();
 
     ModalDialog::dispose();
 }