Recover from feed XML parsing error

lib/www/client/source/src/views/Feed.vue

@@ -82,9 +82,23 @@ export default {
       return data;
     },
     
+    /** Try to fix idiosyncrasies and XML bugs in the source.
+     */
+    fixText (text) {
+      // Of course this will fail if there happens to be an </hr>
+      // element in the source.
+      return text.replace(/(<hr( [^>]*)?>)/g, "$1</hr>")
+    },
+    
     async refresh () {
       const text = await this.api([`/rss/?remote=${atob(this.$route.params.source)}`, {text:true}]);
-      this.feed = this.parse(text);
+      try {
+        this.feed = this.parse(text);
+      } catch (err) {
+        // If it failed to parse, try once again with some
+        // tweaks to address known feed bugs.
+        this.feed = this.parse(this.fixText(text));
+      }
     },
     
     ...mapActions(["api"])