[U-Boot] Possible fix for dns command

[Wolfgang Denk]

Dear "Mathias Adam",

In message <c231e6b8530fa0acb9b1389d049cf359.squirrel at www.inft.de> you wrote:
> repost, in case my mail from last week was lost somewhere...

It would help if you submitted this as proper patch, with a good
Subject:, a usable commit message and most of all with your
Signed-off-by: line.  For details please see
http://www.denx.de/wiki/U-Boot/Patches

Thanks.

Wolfgang Denk

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