Security update for libesmtp

This update for libesmtp fixes the following issues:

- CVE-2019-19977: Fixed stack-based buffer over-read in ntlm/ntlmstruct.c (bsc#1160462).

This update was imported from the SUSE:SLE-15:Update update project.

Fixed bugs
bnc#1189097
L3: [HUAWEI NOT FOR THE USA] Requiring PTF for CVE-2019-19977 on SLES 12 SP5
bnc#1160462
VUL-0: CVE-2019-19977: libesmtp: stack-based buffer over-read in ntlm_build_type_2() in ntlm/ntlmstruct.c
Selected Binaries
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