Ticket #45748: 45748.diff

wp-includes/user.php

@@ -2719 +2719 @@
                         return;
                 }
 
-                if ( $wpdb->get_var( $wpdb->prepare( "SELECT user_email FROM {$wpdb->users} WHERE user_email=%s", $_POST['email'] ) ) ) {
+                if ( email_exists( $_POST['email'] ) )  {
                         $errors->add(
                                 'user_email',
                                 __( '<strong>ERROR</strong>: The email address is already used.' ),