Fix for bug #31 std::list iterator not dereferencable bug in the QgsU…

…niqueValueDialog

With thanks to Mateusz Loskot.



git-svn-id: http://svn.osgeo.org/qgis/trunk@5105 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/gui/qgsuniquevaluedialog.cpp

@@ -57,8 +57,11 @@ QgsUniqueValueDialog::QgsUniqueValueDialog(QgsVectorLayer* vl): QDialog(), mVect
     if (renderer)
     {
 	mClassBreakBox->clear();
-	std::list<int>::iterator iter=renderer->classificationAttributes().begin();
-	int classattr=*iter;
+
+	// XXX - mloskot - fix for Ticket #31 (bug)
+	std::list<int> attributes = renderer->classificationAttributes();
+	std::list<int>::iterator iter = attributes.begin();
+	int classattr = *iter;
 	mClassificationComboBox->setCurrentItem(classattr);
 
 	const std::list<QgsSymbol*> list = renderer->symbols();