Fix transformation variable conflict (#660)
Fix transformation variable conflict (#660)

Summary:
Hello :hand:

In `export_geocoords.py` the variable `transformation` is declared twice (once to hold the transform matrix and once in the function args). I think it's a bug and causes a stack trace during normal invocation:

```
  File "/code/SuperBuild/src/opensfm/opensfm/actions/export_geocoords.py", line 40, in run_dataset
    if transformation:
ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()
```

Renaming one of the two variables fixes the issue.

Pull Request resolved: https://github.com/mapillary/OpenSfM/pull/660

Reviewed By: fabianschenk

Differential Revision: D24430514

Pulled By: paulinus

fbshipit-source-id: acf5e89777840d944a54b34287aff5265c9280e6

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