Bug 1741825 - Add missing truncate of titleStar in parser of Link header r=necko-reviewers,dragana

Differential Revision: https://phabricator.services.mozilla.com/D131505

dom/base/nsContentSink.cpp

@@ -580,6 +580,7 @@ nsresult nsContentSink::ProcessLinkHeader(const nsAString& aLinkData) {
       href.Truncate();
       rel.Truncate();
       title.Truncate();
+      titleStar.Truncate();
       type.Truncate();
       integrity.Truncate();
       srcset.Truncate();