[conformal/btcwallet] c138a6: Return errors if rand.Read fails.

[Josh Rickmar]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcwallet
  Commit: c138a663e195fb9b42f0cb818dac255696430dea
      
https://github.com/conformal/btcwallet/commit/c138a663e195fb9b42f0cb818dac255696430dea
  Author: Josh Rickmar <jr...@conformal.com>
  Date:   2013-11-13 (Wed, 13 Nov 2013)

  Changed paths:
    M wallet/wallet.go

  Log Message:
  -----------
  Return errors if rand.Read fails.