Failsafe for when get_the_terms() returns false

As committed on master branch:
- 7d9d1ee2f0

readme.txt

@@ -175,6 +175,7 @@ Yes you can! Join in on our [GitHub repository](http://github.com/woothemes/wooc
 * Fix - Allow layered nav to work with non pa_ prepended taxonomies
 * Fix - Better backwards compatibility with _woocommerce_exclude_image
 * Fix - is_on_sale() method now returns true for products with a sale product of 0
+* Fix - For when get_the_terms() returns false inside woocommerce_get_product_terms()
 
 = 2.0.9 - 02/05/2013 =
 * Feature - Added is_product_taxonomy() conditonal.

woocommerce-core-functions.php

@@ -1492,6 +1492,10 @@ function woocommerce_get_product_terms( $object_id, $taxonomy, $fields = 'all' )
 
 	$terms 			= array();
 	$object_terms 	= get_the_terms( $object_id, $taxonomy );
+
+	if ( ! is_array( $object_terms ) )
+		return array();
+	
 	$all_terms 		= array_flip( get_terms( $taxonomy, array( 'menu_order' => 'ASC', 'fields' => 'ids' ) ) );
 
 	switch ( $fields ) {