Ticket #49121: 49121.diff

src/wp-includes/pluggable.php

@@ -1991 +1991 @@
 
                         wp_mail(
                                 $wp_new_user_notification_email_admin['to'],
-                                wp_specialchars_decode( sprintf( $wp_new_user_notification_email_admin['subject'], $blogname ) ),
+                                html_entity_decode( sprintf( $wp_new_user_notification_email_admin['subject'], $blogname ) ),
                                 $wp_new_user_notification_email_admin['message'],
                                 $wp_new_user_notification_email_admin['headers']
                         );