Merge branch 'master' into ios-build-script

* master:
  Fix regression on FBX importer unit test
  Check nb of faces and vertices for FBX unit test
  Update helper.py
  Update helper.py
  Solved pyassimp.errors.AssimpError in conda
  Hide commit signature information when fetching commit hash

code/FBXMeshGeometry.cpp

@@ -437,6 +437,9 @@ void ResolveVertexDataArray(std::vector<T>& data_out, const Scope& source,
     // deal with this more elegantly and with less redundancy, but right
     // now it seems unavoidable.
     if (MappingInformationType == "ByVertice" && isDirect) {
+        if (!HasElement(source, indexDataElementName)) {
+            return;
+        }
         std::vector<T> tempData;
 		ParseVectorDataArray(tempData, GetRequiredElement(source, dataElementName));