more robust. I get spurious crashes in this area... maybe c_str()

instead of data() would be in order, too


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@25402 a592a061-630c-0410-9148-cb99ea01b6c8

src/support/qstring_helpers.cpp

@@ -34,6 +34,8 @@ QString toqstr(docstring const & ucs4)
 {
 	// If possible we let qt do the work, since this version does not
 	// need to be superfast.
+	if (ucs4.empty())
+		return QString();
 	return QString::fromUcs4((uint const *)ucs4.data(), ucs4.length());
 }