[ruby-cvs:70170] nobu:r63080 (trunk): Fix typo

[nobu at ruby-lang.org]

nobu	2018-04-04 01:50:17 +0900 (Wed, 04 Apr 2018)

  New Revision: 63080

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=63080

  Log:
    Fix typo
    
    [Bug #14642]
    [Fix GH-1855]
    
    From: MSP-Greg <MSP-Greg at users.noreply.github.com>

  Modified files:
    trunk/test/ruby/test_fiber.rb