Re-enable async children enumerating in FetchGraph

License: MIT
Signed-off-by: Iaroslav Gridin <voker57@gmail.com>

merkledag.go

@@ -140,7 +140,7 @@ func (n *dagService) Remove(nd node.Node) error {
 
 // FetchGraph fetches all nodes that are children of the given node
 func FetchGraph(ctx context.Context, c *cid.Cid, serv DAGService) error {
-	return EnumerateChildren(ctx, serv, c, cid.NewSet().Visit, false)
+	return EnumerateChildrenAsync(ctx, serv, c, cid.NewSet().Visit)
 }
 
 // FindLinks searches this nodes links for the given key,