Pierre-Yves David <pierre-yves.david@fb.com> [Tue, 30 Jun 2015 22:28:40 -0700] rev 25709
amend: move createmarkers evaluation earlier
The value is used at multiple points in the function. Retrieving the
value in the middle of the transaction scope gives the false
impression that it has a single user. We move it at the start of the
function to clarify this.