Security update for openexr

This update for openexr fixes the following issues:

- CVE-2017-14988: Fixed a denial of service in Header::readfrom() (bsc#1061305).

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

Fixed bugs
bnc#1061305
VUL-0: CVE-2017-14988: openexr: denial of service (memory allocation) in Header::readfrom in IlmImf/ImfHeader.cpp
Selected Binaries
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