Oleksandr Tymoshenko e16b207739 Fix crash in drill(1) when IP has two subsequent dots
Cherry-pick crash fix from the upstream repo

PR:		226575
Reported by:	Goran Mekić <meka@tilda.center>
Obtained from:	https://git.nlnetlabs.nl/ldns/commit/?id=98291475
MFC after:	2 weeks
2020-06-22 23:13:14 +00:00
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