Folder list not skipping INBOX for Courier; case seems to matter

ChangeLog

@@ -106,6 +106,7 @@ Version 1.5.1 -- CVS
     change_password plugin
   - Make SMTP Authentication detection in conf.pl more RFC-compliant.
   - Fixed IMAP errors when using mail_fetch plugin to auto-fetch on login.
+  - Fixed folder list in Create Folders list for Courier (properly skip INBOX)
 
 Version 1.5.0
 --------------------

src/folders.php

@@ -110,7 +110,7 @@ $server_type = strtolower($imap_server_type);
 if ( $server_type == 'courier' ) {
   array_push($skip_folders, 'inbox.trash');
   if ( $default_folder_prefix == 'INBOX.' ) {
-    array_push($skip_folders, 'inbox');
+    array_push($skip_folders, 'INBOX');
   }
 }