snappyHexMesh::meshRefinement: clear the mesh before mapping to avoid issues with mapping the mesh flux field

src/mesh/snappyHexMesh/meshRefinement/meshRefinement.C

@@ -1625,6 +1625,9 @@ Foam::autoPtr<Foam::mapDistributePolyMesh> Foam::meshRefinement::balance
             }
             Pout<< endl;
         }
+
+        mesh_.clearOut();
+
         // Do actual sending/receiving of mesh
         map = distributor.distribute(distribution);
 

src/mesh/snappyHexMesh/meshRefinement/meshRefinementBaffles.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2011-2018 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2019 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -412,6 +412,8 @@ Foam::autoPtr<Foam::mapPolyMesh> Foam::meshRefinement::createBaffles
         }
     }
 
+    mesh_.clearOut();
+
     // Change the mesh (no inflation, parallel sync)
     autoPtr<mapPolyMesh> map = meshMod.changeMesh(mesh_, false, true);