Eric van Gyzen ac69e5d471 MFV d1b143ee9a5: libbsdxml (expat) 2.4.6
Update contrib/expat from 2.4.3 to 2.4.6 to fix multiple vulnerabilities.

Reviewed by:	delphij
MFC after:	2 weeks
Relnotes:	yes
Security:	yes; see contrib/expat/Changes since 2.4.3
Sponsored by:	Dell EMC Isilon
2022-03-02 16:40:47 -06:00
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