Security update for libidn

This update for libidn fixes the following issue:

- CVE-2017-14062: Prevent integer overflow in the decode_digit function that
allowed remote attackers to cause a denial of service or possibly have
unspecified other impact (bsc#1056450).

This update was imported from the SUSE:SLE-12:Update update project.

Fixed bugs
bnc#1056450
VUL-0: CVE-2017-14062: libidn,libidn2: integer overflow in puny_decode.c/decode_digit()
Selected Binaries
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