message: fix compiling and formatting issues
diff: @@ -509,7 +509,7 @@ namespace RINGMesh {
  vec3 normal_at_vertex( index_t vertex_id ) const
  {
  index_t f = 0 ;
  - index_t f0 = 0 ;
  + index_t f0 = NO_ID ;
  while( f0 == NO_ID && f < nb_facets() ) {
  for( index_t lv = 0; lv < nb_facet_vertices( f ); lv++ ) {
  if( facet_vertex( f, lv ) == vertex_id ) {
  @@ -520,7 +520,8 @@ namespace RINGMesh {
  f++ ;
  }
  - std::vector< index_t > facet_ids = facets_around_vertex( vertex_id, false , f0 ) ;
  + std::vector< index_t > facet_ids = facets_around_vertex( vertex_id,
  + false, f0 ) ;
  vec3 norm ;
  for( index_t facet_id = 0; facet_id < facet_ids.size(); ++facet_id ) {
  norm += facet_normal( facet_id ) ;
  