WWSympa: Invalid input on sso_login form floods listmaster notification (#1244)

default/mail_tt2/report.tt2

@@ -899,6 +899,9 @@ Warning: this message may already have been sent by one of the list's moderators
 [%~ ELSIF report_entry == 'no_classic_session' ~%]
   [%|loc()%]You are not authorized to delete your account if you are not using the built-in authentication (i.e. you are using a LDAP authentication, a SSO system, etc.).[%END%]
 
+[%~ ELSIF report_entry == 'unknown_authentication_service' ~%]
+  [%|loc(report_param.name)%]Unknown authentication service %1.[%END%]
+
 [%~ END ~%]
 
 [%~ END ~%]

src/cgi/wwsympa.fcgi.in

@@ -3716,12 +3716,12 @@ sub do_sso_login {
         );
         return 1;
     } else {
-        ## Unknown SSO service
+        # Unknown SSO service.
         Sympa::WWW::Report::reject_report_web(
-            'intern',
+            'user',
             'unknown_authentication_service',
             {'name' => $in{'auth_service_name'}},
-            $param->{'action'}, '', '', $robot
+            $param->{'action'}
         );
         wwslog(
             'err',