lib/54440: Relax time constraint in pthread_cond_timedwait unit test

[eric%vangyzen.net@localhost]

>Number:         54440
>Category:       lib
>Synopsis:       Relax time constraint in pthread_cond_timedwait unit test
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    lib-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Aug 05 23:15:00 +0000 2019
>Originator:     Eric van Gyzen
>Release:        
>Organization:
>Environment:
>Description:
You might want to import this commit from FreeBSD:

https://svnweb.freebsd.org/base?view=revision&revision=350620

The commit log explains the problem.
>How-To-Repeat:

>Fix: