Merge branch 'fix/nek5000-uninitialised' into 'master'

Fix issue with uninitialised variable sometimes causing random BC entries

See merge request !801

CHANGELOG.md

@@ -29,6 +29,9 @@ v5.0.0
 
 v4.4.2
 ------
+**NekMesh**:
+- Fix uninitialised memory bug in Nek5000 input module (!801)
+
 **Library**
 - Fix ability to set default implementation in Collections and added an option 
   to set eNoCollections in FieldConvert as default (!789)

utilities/NekMesh/InputModules/InputNek5000.cpp

@@ -465,6 +465,13 @@ void InputNek5000::Process()
         s.str(line.substr(0, 4));
         s >> bcType;
 
+        // Some lines have no boundary condition entries
+        if (s.fail())
+        {
+            lineCnt++;
+            continue;
+        }
+
         if (nElements < 1000)
         {
             // elmt in chars 4-6, side in next 3