[U-Boot] cmd: date: Do not overwrite arguments

Wed Feb 20 01:57:18 UTC 2019

On Fri, Feb 08, 2019 at 10:01:02AM +0100, Roman Kapl wrote:

> Arguments are const and belong to the caller. Calling date in a hush
> loop will yield different results from the second invocation.
> 
> Signed-off-by: Roman Kapl <rka at sysgo.com>

Applied to u-boot/master, thanks!

-- 
Tom
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