Avoid crash on creation of sketch line finish

diff --git a/src/XGUI/XGUI_DocumentDataModel.cpp b/src/XGUI/XGUI_DocumentDataModel.cpp
index 079986bc5134d7e36d7850132776ee27a9639101..719b6f466d2dcb19e14eb6c49dc3a50d0e4bf253 100644 (file)
--- a/src/XGUI/XGUI_DocumentDataModel.cpp
+++ b/src/XGUI/XGUI_DocumentDataModel.cpp
@@ -159,6 +159,8 @@ QVariant XGUI_DocumentDataModel::data(const QModelIndex& theIndex, int theRole)
     {
       int aOffset = historyOffset();
       FeaturePtr aFeature = myDocument->feature(FEATURES_GROUP, theIndex.row() - aOffset);
+      if (!aFeature)
+        return QVariant();
       switch (theRole) {
       case Qt::DisplayRole:
         if (aFeature)