Users: Add `LIMIT 1` to SQL query in `WP_User::get_data_by()`, as only one row is requested.

Props spacedmonkey.
Fixes #43692.
Built from https://develop.svn.wordpress.org/trunk@43651


git-svn-id: http://core.svn.wordpress.org/trunk@43480 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-user.php

@@ -240,7 +240,7 @@ class WP_User {
 
 		if ( ! $user = $wpdb->get_row(
 			$wpdb->prepare(
-				"SELECT * FROM $wpdb->users WHERE $db_field = %s",
+				"SELECT * FROM $wpdb->users WHERE $db_field = %s LIMIT 1",
 				$value
 			)
 		) ) {

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-alpha-43650';
+$wp_version = '5.0-alpha-43651';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.