ENH: selectCells : add one offset to number of cells

applications/utilities/mesh/advanced/selectCells/selectCells.C

@@ -55,6 +55,7 @@ Description
 #include "edgeStats.H"
 #include "treeDataTriSurface.H"
 #include "indexedOctree.H"
+#include "globalMeshData.H"
 
 using namespace Foam;