[U-Boot] [U-Boot,1/1] env: avoid possible NULL pointer access

[Tom Rini]

On Mon, May 08, 2017 at 08:23:54PM +0200, xypron.glpk at gmx.de wrote:

> env_attr_lookup call env_attr_walk with
> callback = regex_callback.
> 
> In env_attr_walk
> attributes = strchr(entry_cpy, ENV_ATTR_SEP)
> will return NULL if ENV_ATTR_SEP is not found.
> 
> In the aftermath regex_callback may call
> strlen(attributes)
> with a NULL value which will lead to a failure.
> 
> The problem was indicated by scan-clam.
> 
> Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>

Applied to u-boot/master, thanks!

-- 
Tom
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