OCA/OCB — pull request #82 by alhashash (2014-11-06 20:58:41+00:00)
Title: [FIX] Fixes incorrect merge 3e1d5be951fb8

Merge ab797f0cd8 had a conflict that was incorrectly resolved. As a result, cannot validate invoices with
tax line.

This PR correctly merges commit ab797f0cd8f76be2 to resolve the issue.