From 8d2ee69f9d12edfb11bf6bc8032aaf26e361a0cf Mon Sep 17 00:00:00 2001
From: Gary Pendergast <gary@pento.net>
Date: Tue, 8 Jan 2019 06:07:51 +0000
Subject: [PATCH] Users: Use `email_exists()` in
 `send_confirmation_on_profile_email()`, instead of a manual query.

This gives us caching, and removes the use of the `$wpdb` global.

Props spacedmonkey, pento.
Fixes #45748.


Built from https://develop.svn.wordpress.org/trunk@44465


git-svn-id: http://core.svn.wordpress.org/trunk@44296 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/user.php    | 5 ++---
 wp-includes/version.php | 2 +-
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/wp-includes/user.php b/wp-includes/user.php
index 09be161e15..d99885142d 100644
--- a/wp-includes/user.php
+++ b/wp-includes/user.php
@@ -2692,10 +2692,9 @@ function _wp_get_current_user() {
  * @since 4.9.0 This function was moved from wp-admin/includes/ms.php so it's no longer Multisite specific.
  *
  * @global WP_Error $errors WP_Error object.
- * @global wpdb     $wpdb   WordPress database object.
  */
 function send_confirmation_on_profile_email() {
-	global $errors, $wpdb;
+	global $errors;
 
 	$current_user = wp_get_current_user();
 	if ( ! is_object( $errors ) ) {
@@ -2719,7 +2718,7 @@ function send_confirmation_on_profile_email() {
 			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.' ),
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 99fa814bee..f265d0bd6f 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.1-alpha-44464';
+$wp_version = '5.1-alpha-44465';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.