message: revert for RINGMeshException
diff: @@ -134,8 +134,9 @@ namespace RINGMesh {
  : std::runtime_error( message ), category_( category )
  {
  }
  - virtual ~RINGMeshException() throw() = default ;
  -
  + virtual ~RINGMeshException() throw()
  + {
  + }
  const std::string& category() const
  {
  return category_ ;
  