tdf#135879 sw: fix bookmark dialog's Delete button

(regression from cb5d18871b46ef4f7bc47eb4d71df5374d712575)

Change-Id: Ic8c66504a760ef26fbf95a5a1a13b37346982024
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/103015
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@cib.de>
diff --git a/sw/source/ui/misc/bookmark.cxx b/sw/source/ui/misc/bookmark.cxx
index b69cce7..33cdbee 100644
--- a/sw/source/ui/misc/bookmark.cxx
+++ b/sw/source/ui/misc/bookmark.cxx
@@ -163,6 +163,7 @@ IMPL_LINK_NOARG(SwInsertBookmarkDlg, SelectionChangedHdl, weld::TreeView&, void)
        m_xInsertBtn->set_sensitive(false);
        m_xGotoBtn->set_sensitive(nSelectedRows == 1);
        m_xRenameBtn->set_sensitive(nSelectedRows == 1 && !m_bAreProtected);
        m_xDeleteBtn->set_sensitive(!m_bAreProtected);
        m_xEditBox->set_text(sEditBoxText.makeStringAndClear());
    }
    else