face: Add handling for duplicate vertices in sameVertices

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1821

src/OpenFOAM/meshes/meshShapes/face/face.C

@@ -427,18 +427,22 @@ bool Foam::face::sameVertices(const face& a, const face& b)
 
     forAll(a, i)
     {
-        bool found = false;
+        // Count occurrences of a[i] in a
+        label aOcc = 0;
+        forAll(a, j)
+        {
+            if (a[i] == a[j]) aOcc++;
+        }
 
+        // Count occurrences of a[i] in b
+        label bOcc = 0;
         forAll(b, j)
         {
-            if (a[i] == b[j])
-            {
-                found = true;
-                break;
-            }
+            if (a[i] == b[j]) bOcc++;
         }
 
-        if (!found) return false;
+        // Check if occurrences of a[i] in a and b are the same
+        if (aOcc != bOcc) return false;
     }
 
     return true;

src/mesh/blockMesh/blockMesh/blockMeshCheck.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -27,7 +27,6 @@ License
 
 // * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
-// Check the blockMesh topology
 void Foam::blockMesh::checkBlockMesh(const polyMesh& bm) const
 {
     if (verboseOutput)