Fix Bug #6928 - "Access-Reject" not logged in MySQL radpostauth table

Confirmed working by a user in https://redmine.pfsense.org/issues/6928#note-5

net/pfSense-pkg-freeradius2/files/usr/local/pkg/freeradius.inc

@@ -1530,8 +1530,10 @@ function freeradius_serverdefault_resync() {
 	// post-auth section DATABASE 1
 	if (($sqlconf['varsqlconfincludeenable'] == 'on') && ($sqlconf['varsqlconfenablepostauth'] == 'Enable')) {
 		$varsqlconfpostauth = "$varsqlconf2failover {" . "\n\t\t\tsql" . "\n\t\t\t$varsqlconf2postauth" . "\n\t}";
+		$varsqlconfpostauthtypereject = 'sql';
 	} else {
 		$varsqlconfpostauth = '### sql DISABLED ###';
+		$varsqlconfpostauthtypereject = '# sql';
 	}
 
 	// Changing authorize section for plain mac auth
@@ -2163,7 +2165,7 @@ post-auth {
 	Post-Auth-Type REJECT {
 
 		# log failed authentications in SQL, too.
-		# sql
+		$varsqlconfpostauthtypereject
 		attr_filter.access_reject
 	}
 }