tree 4c0d152e5afa8eb5764b2ae86d107dcc2f4aaa0e
parent 961c437b6cd68375d66c1f0cac9ade63115c0750
author Gerlando Falauto <gerlando.falauto@keymile.com> 1349397970 +0000
committer Tom Rini <trini@ti.com> 1349460462 -0700

env: fix crash using default -f -a

env default -a -f calls env_check_apply on all existing environment
variables with a NULL value for "newval" as a way of cleaning up.
This causes string manipulation functions to crash on most architectures.
So replace a NULL argument with an empty string.

Reported-By: Stefano Babic <sbabic@denx.de>
Signed-off-by: Gerlando Falauto <gerlando.falauto@keymile.com>
Tested-by: Stefano Babic <sbabic@denx.de>