woothemes/woocommerce — pull request #640 by lukecarbis (2012-02-14 23:17:04+00:00)
Title: wp_debug notice fix

Fix for a whole heap of Notices that are displayed (and break admin-ajax) when wp-debug is on and the woocommerce_tax_rates option hasn't been saved. By typecasting $tax_rates and $local_tax_rates as arrays, it makes "if ($tax_rates)" and "if ($local_tax_rates)" to return true instead of false.