WooCommerce Subscriptions

Hi,

I found an issue when saving a subscription which is caused by $current_base_location_taxes or $old_line_subtotal being set to 0 in class-wcs-admin-meta-boxes: line 572.

I wondered if it would be possible to include a check and continue if either of these variables are 0 to avoid the DivideByZero issue?

Please let me know if you would like any further details.
Thanks,
Scott