Remove one-time variable from add_settings_error().

props niallkennedy.
fixes #22228.

git-svn-id: https://develop.svn.wordpress.org/trunk@28681 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/template.php

@@ -1298,13 +1298,12 @@ function do_settings_fields($page, $section) {
 function add_settings_error( $setting, $code, $message, $type = 'error' ) {
 	global $wp_settings_errors;
 
-	$new_error = array(
+	$wp_settings_errors[] = array(
 		'setting' => $setting,
-		'code' => $code,
+		'code'    => $code,
 		'message' => $message,
-		'type' => $type
+		'type'    => $type
 	);
-	$wp_settings_errors[] = $new_error;
 }
 
 /**