Thomas Weber 7013c06124 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>

2010-11-27 23:35:13 +01:00

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