[erl-frontend] Parse generated locations with columns
[erl-frontend] Parse generated locations with columns

Summary: Add support for parsing generated locations that have a column. Previously we were expecting only a line number, but now we can also parse line+column.

Reviewed By: mmarescotti

Differential Revision: D35010601

fbshipit-source-id: d0ee3105e0365b9ac5e59b0f5945f08e93f6fa2d

facebook/infer,facebook/infer,facebook/infer,facebook/infer,facebook/infer,facebook/infer,facebook/infer