message: Fix type alias where clause warning
diff: @@ -17,6 +17,7 @@ use super::{
  use scored::MinScored;
  use super::visit::{
  GraphRef,
  + GraphBase,
  Visitable,
  VisitMap,
  IntoNeighbors,
  @@ -166,7 +167,7 @@ pub fn is_cyclic_directed<G>(g: G) -> bool
  }).is_err()
  }
  -type DfsSpaceType<G> where G: Visitable = DfsSpace<G::NodeId, G::Map>;
  +type DfsSpaceType<G> = DfsSpace<<G as GraphBase>::NodeId, <G as Visitable>::Map>;
  /// Workspace for a graph traversal.
  #[derive(Clone, Debug)]
  