[PATCH COMMITTED] resolv: Fully initialize struct mmsghdr in send_dg [BZ #23037]

[Andreas Schwab]

I think this has no real influence on the use in the resolver since the
socket it creates isn't a SOCK_SEQPACKET socket.  Do you agree?

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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