[7064] introduces an extra query for each call to in_category(). Avoid the query if an int is passed.

git-svn-id: http://svn.automattic.com/wordpress/trunk@7904 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/category-template.php

@@ -185,9 +185,12 @@ function in_category( $category ) { // Check if the current post is in the given
 	if ( empty($category) )
 		return false;
 
+	// If category is not an int, check to see if it's a name
+	if ( ! is_int($category) ) {
 		$cat_ID = get_cat_ID($category);
 		if ( $cat_ID )
 			$category = $cat_ID;
+	}
 
 	$categories = get_object_term_cache($post->ID, 'category');
 	if ( false === $categories )