ofz#7648 Bad-cast

Change-Id: I21aaf36f3d6b6c3054649208de809b99aa384c01
Reviewed-on: https://gerrit.libreoffice.org/52834Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

lotuswordpro/source/filter/lwpfrib.cxx

@@ -251,7 +251,7 @@ void LwpFrib::RegisterStyle(LwpFoundry* pFoundry)
     XFTextStyle* pNamedStyle = nullptr;
     if (m_pModifiers->HasCharStyle && pFoundry)
     {
-        pNamedStyle = static_cast<XFTextStyle*>
+        pNamedStyle = dynamic_cast<XFTextStyle*>
                                 (pFoundry->GetStyleManager()->GetStyle(m_pModifiers->CharStyleID));
     }
     if (pNamedStyle)