[U-Boot] cmd/nvedit.c: Update input handling to cover overflow cases

[Tom Rini]

On Tue, Sep 26, 2017 at 07:37:11PM -0400, Tom Rini wrote:

> When we have multiple messages provided, we need to be sure that we do
> not exceed the length of our 'message' buffer.  In the for loop, make
> sure that pos is not larger than message.  Only copy in at most however
> much of the message buffer remains.  Finally, if we have not reached the
> end of the message buffer, put in a space and NULL, and if we have,
> ensure the buffer is now NULL termined.
> 
> Reported-by: Coverity (CID: 165116)
> Signed-off-by: Tom Rini <trini at konsulko.com>

Applied to u-boot/master, thanks!

-- 
Tom
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