Shopify/active_merchant — pull request #1285 by butchmarshall (2014-07-02 16:05:19+00:00)
Title: In ruby 1.9.3 my avs_street_name wasnt being populated

http://apidock.com/ruby/Array/keep_if

keep_if: Deletes every element of self for which block evaluates to false

Running keep_if the first time removes the street name from the second run.

This breaks it.