[U-Boot] tools: mkimage: fix sizeof_mismatch found by coverity

[Tom Rini]

On Tue, Jan 17, 2017 at 07:36:51PM +0100, Sven Ebenfeld wrote:

> Reported-by: Coverity (CID: 155214)
> Signed-off-by: Sven Ebenfeld <sven.ebenfeld at gmail.com>

Applied to u-boot/master, thanks!

-- 
Tom
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: Digital signature
URL: <http://lists.denx.de/pipermail/u-boot/attachments/20170120/9c907c72/attachment.sig>