[btcsuite/btcd] 907152: mempool: reduce lock contention

[David Hill]

  Branch: refs/heads/master
  Home:   https://github.com/btcsuite/btcd
  Commit: 907152cef9714be35f6e32352268a23dc76bdb9c
      
https://github.com/btcsuite/btcd/commit/907152cef9714be35f6e32352268a23dc76bdb9c
  Author: David Hill <dh...@mindcry.org>
  Date:   2016-02-14 (Sun, 14 Feb 2016)

  Changed paths:
    M mempool.go

  Log Message:
  -----------
  mempool:  reduce lock contention