Check is_singular when looking for shortcode content

Closes #11489

includes/wc-conditional-functions.php

@@ -410,5 +410,5 @@ function wc_checkout_is_https() {
 function wc_post_content_has_shortcode( $tag = '' ) {
 	global $post;
 
-	return is_a( $post, 'WP_Post' ) && has_shortcode( $post->post_content, $tag );
+	return is_singular() && is_a( $post, 'WP_Post' ) && has_shortcode( $post->post_content, $tag );
 }

readme.txt

@@ -159,6 +159,7 @@ Yes you can! Join in on our [GitHub repository](http://github.com/woothemes/wooc
 == Changelog ==
 
 = 2.7.0 =
+* Respect stock status and prevent the "out of stock threshold" setting affecting existing in-stock products.
 * Added Nigerian Provinces to i18n/state.
 
 [See changelog for all versions](https://raw.githubusercontent.com/woothemes/woocommerce/master/CHANGELOG.txt).