tree 4fd24ea97e78fb6f140d15db2ff4e5f5b85f1837
parent 4d282650cae86790a6f54aaf9630e507d85a79a6
author Thomas Weber <weber@corscience.de> 1290600471 +0100
committer Wolfgang Denk <wd@denx.de> 1290897313 +0100

Common/command: Guard strchr/strlen from NULL pointer

Guard strchr/strlen from being called with NULL pointer.
This line is crashing when command "env" is called without subcommand.

The cmd is NULL in this case because the calling function "do_env"
decremented the argc without checking if there are still arguments available.

Signed-off-by: Thomas Weber <weber@corscience.de>