[TD]fix line standard drop downs

src/Mod/TechDraw/App/LineGenerator.cpp

@@ -55,6 +55,14 @@ using namespace TechDraw;
 using DU = DrawUtil;
 
 LineGenerator::LineGenerator()
+{
+    reloadDescriptions();
+//    m_elementDefs = loadElements();
+//    m_lineDefs = getLineDefinitions();
+//    m_lineDescs = getLineDescriptions();
+}
+
+void LineGenerator::reloadDescriptions()
 {
     m_elementDefs = loadElements();
     m_lineDefs = getLineDefinitions();