[U-Boot] env: fix the env export varname

[Tom Rini]

On Tue, Oct 08, 2013 at 02:20:27PM +0200, Pierre Aubert wrote:

> The env export command doesn't export the first variable of the list
> since commit 5a31ea04c9ee5544fbb70ad7597ea4b294840eab
> "env grep" - reimplement command using hexport_r()
> 
> Signed-off-by: Pierre Aubert <p.aubert at staubli.com>

Applied to u-boot/master, thanks!

-- 
Tom
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