Sort in BranchPrefixHoisting
Sort in BranchPrefixHoisting

Summary: Follow-up to {D27929494 (https://github.com/facebook/redex/commit/2505bdfa261db05454f3d1d3b5b53cc427b037ec)}. Keep the hoisting of source-blocks in a deterministic order.

Reviewed By: emma0303

Differential Revision: D28101334

fbshipit-source-id: 43e05a0e1d349c007180709309bae55181308fb8

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