[wanproxy/wanproxy] da5a71: Restore first-pass collision avoidance.

[Juli Mallett]

  Branch: refs/heads/master
  Home:   https://github.com/wanproxy/wanproxy
  Commit: da5a711e3c0bbcc706b9f4d2cbd43a91f70a4a96
      https://github.com/wanproxy/wanproxy/commit/da5a711e3c0bbcc706b9f4d2cbd43a91f70a4a96
  Author: Juli Mallett <juli at clockworksquid.com>
  Date:   2018-02-09 (Fri, 09 Feb 2018)

  Changed paths:
    M xcodec/xcodec_encoder.cc
    M xcodec/xcodec_encoder.h

  Log Message:
  -----------
  Restore first-pass collision avoidance.