brokenlinks: fix possible panic in markAsBroken

If the Link does not have parentUrl, set the parent URL using the link
URL itself.

This only happened if the target URL that we will scan return an error.

1 files changed, 6 insertions, 1 deletions

diff --git a/brokenlinks/worker.go b/brokenlinks/worker.go
index 79ae796..ce109ed 100644
--- a/brokenlinks/worker.go
+++ b/brokenlinks/worker.go
@@ -245,7 +245,12 @@ func (wrk *worker) markAsBroken(linkq jarink.Link) {
 	if slices.Contains(wrk.opts.ignoreStatus, linkq.StatusCode) {
 		return
 	}
-	var parentUrl = linkq.ParentUrl.String()
+	var parentUrl string
+	if linkq.ParentUrl == nil {
+		parentUrl = linkq.Url
+	} else {
+		parentUrl = linkq.ParentUrl.String()
+	}
 	var listBroken = wrk.result.BrokenLinks[parentUrl]
 	if linkq.ErrScan != nil {
 		linkq.Error = linkq.ErrScan.Error()