message: Fix 64-bit build
diff: @@ -48,7 +48,7 @@ struct topology_traits<SINGLE_SHAPE>
  {
  constexpr static ConnectivityType cell_to_nodes = NO_INDIRECTION;
  - using IdxType = int;
  + using IdxType = axom::IndexType;
  using ZoneSet = slam::PositionSet<IdxType, IdxType>;
  using NodeSet = slam::PositionSet<IdxType, IdxType>;
  @@ -82,7 +82,7 @@ struct topology_traits<MIXED_SHAPE>
  {
  constexpr static ConnectivityType cell_to_nodes = TYPED_INDIRECTION;
  - using IdxType = int;
  + using IdxType = axom::IndexType;
  using ZoneSet = slam::PositionSet<IdxType, IdxType>;
  using NodeSet = slam::PositionSet<IdxType, IdxType>;
  