myk's patch to catch and ignore a microsummary exception

services/sync/BookmarksSyncService.js

@@ -688,9 +688,12 @@ BookmarksSyncService.prototype = {
       if (command.data.type == "microsummary") {
         this._log.info("   \-> is a microsummary");
         let genURI = makeURI(command.data.generatorURI);
+        try {
           let micsum = this._ms.createMicrosummary(URI, genURI);
           this._ms.setMicrosummary(newId, micsum);
         }
+        catch(ex) { /* ignore "missing local generator" exceptions */ }
+      }
       break;
     case "folder":
       this._log.info(" -> creating folder \"" + command.data.title + "\"");