Fix: Store the name of an abuse group as a string.

lib/mentat/module/reporter.py

@@ -550,7 +550,7 @@ class MentatReporterScript(mentat.script.fetcher.FetcherScript):
                         tmphlp['report_count'] += 1
                     if 'extra_id' in severity_stats and severity_stats['extra_id']:
                         tmphlp['extra_ids'].extend(severity_stats['extra_id'])
-                        tmphlp['abuse_groups'].extend(abuse_group)
+                        tmphlp['abuse_groups'].append(abuse_group)
                         tmphlp['report_count'] += len(severity_stats['extra_id'])
                     if 'mail_to' in severity_stats and severity_stats['mail_to']:
                         tmphlp['mails_to'].extend(severity_stats['mail_to'])