crawler: fix syntax issue (where did that come from?)

crawler/crawl.go

@@ -29,7 +29,7 @@ var Visited = struct {
 // visited it yet, will spawn a goroutine for it. It will also return that link,
 // because we have to add it to our list of linked nodes.
 func visitNode(node *html.Node, parent, current string, wg *sync.WaitGroup) (*string, error) {
-	var val *string
+	var val string
 	if node.Type == html.ElementNode && node.Data == "a" {
 		for _, a := range node.Attr {
 			if a.Key != "href" {
@@ -65,7 +65,7 @@ func visitNode(node *html.Node, parent, current string, wg *sync.WaitGroup) (*st
 			}
 		}
 	}
-	return val, nil
+	return &val, nil
 }
 
 // parseNode parses a single node. It is recursive, and will first be called
@@ -80,7 +80,7 @@ func parseNode(node *html.Node, parent, current string, wg *sync.WaitGroup) ([]s
 	}
 
 	if val != nil {
-		links = append(links, val)
+		links = append(links, *val)
 	}
 
 	for c := node.FirstChild; c != nil; c = c.NextSibling {