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tiny-printf: Avoid printing NULL strings
authorSimon Glass <sjg@chromium.org>
Tue, 29 Dec 2015 12:22:46 +0000 (05:22 -0700)
committerSimon Glass <sjg@chromium.org>
Thu, 21 Jan 2016 02:06:22 +0000 (19:06 -0700)
commit8e31681c5a5a2fd6bbdf751bcc900a4481e2fa29
tree342441dd9382f84f8e1fd52c089ba394b378a97ftree | snapshot
parent9ab401ae0eb0386e300f24262c3b9178892769aacommit | diff
tiny-printf: Avoid printing NULL strings

Add a check for NULL strings to avoid printing junk to the console.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
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