Whitespaces in slug

Hi

When new user logs in with whitespaces after her login name, new blow was created with whitespaces in slug. My quick fix is

--- wpmuldap/lib/wpmu_ldap.functions.php.orig	2021-11-25 10:55:49.741703173 +0200
+++ wpmuldap/lib/wpmu_ldap.functions.php	2021-11-25 10:58:04.074494339 +0200
@@ -19,6 +19,9 @@
 	if (!isset($ldapUserData)) 	$ldapUserData = false;
 	if (!isset($createBlog))		$createBlog = true;
 
+	// masse 25.11.2021 - sanitize $newUserName
+	$newUserName = trim($newUserName);
+
 	// Check to see if email is empty
 	if ( empty($ldapUserData[LDAP_INDEX_EMAIL]) )
 		return new WP_Error('ldapcreate_emailempty', sprintf(__('<strong>ERROR</strong>: <strong>%s</strong> does not have an email address associated with the ldap record.  All wordpress accounts must have a unique email address.'),$newUserName));