Scanner DB: fix admin comment posting

scannerdb/views.py

@@ -394,7 +394,7 @@ def comment_report(request, report_id):
     except (backend.models.scannerdb.ScanReport.DoesNotExist, ValueError):
         raise django.http.Http404('Report {} not found'.format(report_id))
 
-    form = forms.ReportRejectionForm(request.POST)
+    form = forms.AdminCommentForm(request.POST)
     if not form.is_valid():
         return django.http.HttpResponseForbidden()