Security update for libopenmpt (moderate)

This update for libopenmpt to version 0.3.9 fixes the following issues: These security issues were fixed: - CVE-2018-11710: Prevent write near address 0 in out-of-memory situations when reading AMS files bsc1095644 - CVE-2018-10017: Preven out-of-bounds memory read with IT/ITP/MO3 files containin...