[U-Boot] common: env: remove superfluous assignment

Fri May 12 17:21:50 UTC 2017

On Mon, May 08, 2017 at 09:43:43PM +0200, xypron.glpk at gmx.de wrote:

> The value assigned to variable 'value' is never used.
> 
> The problem was indicated by clang scan-build.
> 
> Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>

Applied to u-boot/master, thanks!

-- 
Tom
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