[U-Boot] common/cli_hush.c: remove unnecessary double braces

[Tom Rini]

On Wed, Jun 11, 2014 at 12:28:47AM +0200, Jeroen Hofstee wrote:

> Clang interpretes an if condition like  "if ((a = b) == NULL)
> as it tries to assign a value in a statement. Hence if you do
> "if ((something)) it warns you that you might be confused.
> Hence drop the double braces for plane if statements.
> 
> Simon Glass <sjg at chromium.org>
> Signed-off-by: Jeroen Hofstee <jeroen at myspectrum.nl>

Applied to u-boot/master, thanks!

-- 
Tom
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