K 10
svn:author
V 4
ngie
K 8
svn:date
V 27
2014-10-13T02:44:35.468662Z
K 7
svn:log
V 254
Only test the return value in mktime_negyear

Testing for the errno is an optional requirement according to POSIX, and
FreeBSD doesn't document that errno would be set on failure with mktime

Submitted by: pho
Sponsored by: EMC / Isilon Storage Division

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