Copy reference of original reconstruction
Copy reference of original reconstruction

Summary:
Copy the reference from the original reconstruction when undistorting.

|no reference|with correct reference|
|{F625260616}|{F625260889}|

Reviewed By: YanNoun

Differential Revision: D29164225

fbshipit-source-id: f3d621732b87acdc7403e2dd6a5c9b87ec153794

mapillary/OpenSfM,mapillary/OpenSfM,mapillary/OpenSfM,mapillary/OpenSfM,mapillary/OpenSfM