Try to fix old-GCC issue (#555)
Try to fix old-GCC issue (#555)

Summary:
Pull Request resolved: https://github.com/facebook/redex/pull/555

Make a method static. Capture `this` for another.

Reviewed By: minjang

Differential Revision: D23881504

fbshipit-source-id: 86a320ab26091f721c4e3886816323a2a376f5dc

facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex