RIOT-OS/RIOT — pull request #1920 by thomaseichinger (2014-10-31 12:50:06+00:00)
Title: drivers/at86rf231: fix two cppcheck findings

Pointed out by @N8Fear in https://github.com/RIOT-OS/RIOT/pull/1846/files#r19663042 and https://github.com/RIOT-OS/RIOT/pull/1846/files#r19663100.