[ruby-cvs:65526] nobu:r58354 (trunk): signal.c: add sigprocmask guard

[nobu at ruby-lang.org]

nobu	2017-04-15 01:07:45 +0900 (Sat, 15 Apr 2017)

  New Revision: 58354

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=58354

  Log:
    signal.c: add sigprocmask guard

  Modified files:
    trunk/signal.c