From d539c11a9444bdc4ba8fd8db76304d6317c6e169 Mon Sep 17 00:00:00 2001
From: Daryl Koopersmith <koop@git.wordpress.org>
Date: Fri, 7 Sep 2012 21:04:58 +0000
Subject: [PATCH] Ensure $post_id is defined in wp_mime_type_icon() to prevent
 notices when a valid mime type string is provided. see #21835.

git-svn-id: https://develop.svn.wordpress.org/trunk@21782 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/post.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/wp-includes/post.php b/wp-includes/post.php
index 4bc1e7e684..4be2d547a5 100644
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -4150,8 +4150,9 @@ function wp_attachment_is_image( $post_id = 0 ) {
 function wp_mime_type_icon( $mime = 0 ) {
 	if ( !is_numeric($mime) )
 		$icon = wp_cache_get("mime_type_icon_$mime");
+
+	$post_id = 0;
 	if ( empty($icon) ) {
-		$post_id = 0;
 		$post_mimes = array();
 		if ( is_numeric($mime) ) {
 			$mime = (int) $mime;