Mark Johnston 44de1834b5 nfsclient: Avoid copying uninitialized bytes into statfs
hst will be nul-terminated but the remaining space in the buffer is left
uninitialized.  Avoid copying the entire buffer to ensure that
uninitialized bytes are not leaked via statfs(2).

Reported by:	KMSAN
Reviewed by:	rmacklem
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D31167
2021-07-15 12:18:17 -04:00
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