tsocket/bsd: fix bug #7115 FreeBSD includes the UDP header in FIONREAD

[Stefan (metze) Metzmacher]

Hi Jeremy,

> - Log -----------------------------------------------------------------
> commit 936828de71023d90aaec6c1dba84052246bbad11
> Author: Jeremy Allison <jra at samba.org>
> Date:   Wed Feb 17 09:24:34 2010 -0800
> 
>     Fix commit d07cd37b993d3c9beded20323174633b806196b5
>     
>     Which was:
>     
>         tsocket/bsd: fix bug #7115 FreeBSD includes the UDP header in FIONREAD
>     
>     Metze, this has to have been wrong - you are throwing away the talloc_realloc
>     pointer returned. Also no error checking. Please review.
> 
>     Thank goodness for gcc warnings :-).

talloc_realloc would only shrink the size and can't fail, but it's good
to remove the warnings (you were faster with your commit because I had
no internet link...)

metze

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