fixes a crash reported by Xavier Maillard for RSS feeds without link elemnet

CHANGELOG

@@ -9,6 +9,7 @@ Changes since beta1
 - fixes gophermap being considered as gemtext files 
 - fixes opening mailto links
 - fixes existing non-html ressources marked a to_fetch even when not needed (simple and/or confusion)
+- fixes a crash with RSS feeds without <link> element
 - attempt at hiding XMLparsedAsHTMLWarning from BS4 library
 - chafa now used by default everywhere if version > 1.10
 - ignoring encoding error in ansicat

ansicat.py

@@ -860,7 +860,10 @@ class FeedRenderer(GemtextRenderer):
                 self.validity = False
             postslist = ""
             for i in parsed.entries:
-                line = "=> %s " %i.link
+                if "link" in i:
+                    line = "=> %s " %i.link
+                else:
+                    line = "* "
                 if "published" in i:
                     pub_date = time.strftime("%Y-%m-%d",i.published_parsed)
                     line += pub_date + " : "