[PATCH] Coverity fixes.

[Ralph Böhme]

On Sat, Nov 10, 2018 at 12:05:31AM +0100, Stefan Metzmacher wrote:
>Fixing Coverity or compiler warnings is *much* harder than
>it sometimes seems and they need very careful review!

drat, sorry! And I even reviewed the original patch (digs a hole and hides in 
shame).

-slow

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Ralph Boehme, Samba Team       https://samba.org/
Samba Developer, SerNet GmbH   https://sernet.de/en/samba/
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