[btcsuite/btcwallet] 86420c: Regenerate walletrpc package. (#418)

[Josh Rickmar]

  Branch: refs/heads/master
  Home:   https://github.com/btcsuite/btcwallet
  Commit: 86420c4890b888aeca8e19c7ae2f3360c32508a8
      
https://github.com/btcsuite/btcwallet/commit/86420c4890b888aeca8e19c7ae2f3360c32508a8
  Author: Josh Rickmar <jr...@devio.us>
  Date:   2016-04-19 (Tue, 19 Apr 2016)

  Changed paths:
    M rpc/walletrpc/api.pb.go

  Log Message:
  -----------
  Regenerate walletrpc package. (#418)

Fixes build when using newer versions of the grpc packages.