Pass right number of subdomains to grid factory
Because gmsh indices start at 1 and domain indices at 0, there is an bug where the gmsh reader pass the wrong number of maximum domains (one more) to the grid factory. This MR solves the issue.
Because gmsh indices start at 1 and domain indices at 0, there is an bug where the gmsh reader pass the wrong number of maximum domains (one more) to the grid factory. This MR solves the issue.