Make sure taxonomy args are set before using. Props Sam_a. fixes #696…

…0 for 2.5

git-svn-id: https://develop.svn.wordpress.org/branches/2.5@7953 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/taxonomy.php

@@ -1058,14 +1058,14 @@ function wp_get_object_terms($object_ids, $taxonomies, $args = array()) {
 	if ( count($taxonomies) > 1 ) {
 		foreach ( $taxonomies as $index => $taxonomy ) {
 			$t = get_taxonomy($taxonomy);
-			if ( is_array($t->args) && $args != array_merge($args, $t->args) ) {
+			if ( isset($t->args) && is_array($t->args) && $args != array_merge($args, $t->args) ) {
 				unset($taxonomies[$index]);
 				$terms = array_merge($terms, wp_get_object_terms($object_ids, $taxonomy, array_merge($args, $t->args)));
 			}
 		}
 	} else {
 		$t = get_taxonomy($taxonomies[0]);
-		if ( is_array($t->args) )
+		if ( isset($t->args) && is_array($t->args) )
 			$args = array_merge($args, $t->args);
 	}