Fix illegal HTML from the Auth plugin. It was making LI's with no UL's. Fixes bug #11392

docs/changelog/7.x.x.txt

@@ -2,6 +2,7 @@
  - fixed #11390: Meta description duplicated in asset Folder
  - fixed #11391: Duplicated Thingy maintains ids for storage fields
  - fixed #11381: Captcha of DataForm cached
+ - fixed #11392: account.message var sometimes returns invalid html
 
 7.8.11
  - fixed #11362: Unable to checkout with ITransact plugin

lib/WebGUI/Auth/WebGUI.pm

@@ -1299,7 +1299,7 @@ sub updateAccount {
    }
    
    if($error){
-      $display = $error;
+      $display = '<ul>'.$error.'</ul>';
    }
    
    my $properties;