[ruby-cvs:69639] normal:r62458 (trunk): thread.c: stop updating timespec when timeout is unspecified

[normal at ruby-lang.org]

normal	2018-02-18 11:12:18 +0900 (Sun, 18 Feb 2018)

  New Revision: 62458

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=62458

  Log:
    thread.c: stop updating timespec when timeout is unspecified
    
    No need to waste cycles updating timespecs if there's no expiry.

  Modified files:
    trunk/thread.c