cid#1473244 silence Unchecked return value

Change-Id: If33e7cd76e361e8abfe71a88df0b3875759a059d
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/111303
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/extensions/source/bibliography/general.cxx b/extensions/source/bibliography/general.cxx
index 5cadd05..1b71225 100644
--- a/extensions/source/bibliography/general.cxx
+++ b/extensions/source/bibliography/general.cxx
@@ -344,7 +344,7 @@ IMPL_LINK(BibGeneralPage, LastElementKeyInputHdl, const KeyEvent&, rKeyEvent, bo
                    xUpdateCursor->moveToInsertRow();
            }
            else
                xRowSet->next();
                (void)xRowSet->next();
        }
        xIdentifierED->grab_focus();
        xIdentifierED->select_region(0, -1);