jquery/jquery — pull request #544 by JangoSteve (2011-10-11 20:30:05+00:00)
Title: Fix #10202. Don't modify data property in ajax, regression from #9682.

This fixes a regression (see [#10202](http://bugs.jquery.com/ticket/10202) for discussion), which was introduced in [#9862](http://bugs.jquery.com/ticket/9682) (present in v1.6.3 and 1.6.4). I included a test and a fix.