Properly fix the issue with reading scalar properties

Corrected the original application of the patch which I did wrong. The
new patch from David fixes the issue.

Change-Id: Ib02c9f3c8e102039f1eb917a6e5fc8ab929a2b10

IO/vtkEnSight6Reader.cxx

@@ -1179,7 +1179,8 @@ int vtkEnSight6Reader::ReadScalarsPerElement(
       }
     else 
       {
-      while (lineRead && strncmp(line, "part", 4) != 0)
+      while (lineRead && strncmp(line, "part", 4) != 0 &&
+                         strncmp(line, "END TIME STEP", 13) != 0 )
         {
         elementType = this->GetElementType(line);
         if (elementType < 0)