security/clamav: upgrade 0.101.2 -> 0.101.3, partial security fix
- please note another fix is coming soonish: https://www.openwall.com/lists/oss-security/2019/08/06/3
- see also https://bugzilla.clamav.net/show_bug.cgi?id=12356
PR: 239684
Approved by: delphij (ports-secteam)
Relnotes: https://blog.clamav.net/2019/08/clamav-01013-security-patch-release-and.html
MFH: 2019Q3
Security: CVE-2019-13232