[ruby/mutex_m] Make VERSION shareable

https://github.com/ruby/mutex_m/commit/a839e29d04
2021-08-05 21:14:36 -04:00 · 2021-08-05 21:14:36 -04:00 · d09cb64ae5
--- a/lib/mutex_m.rb
+++ b/lib/mutex_m.rb
@ -41,6 +41,7 @@
 module Mutex_m

  VERSION = "0.1.1"
+  Ractor.make_shareable(VERSION) if defined?(Ractor)

  def Mutex_m.define_aliases(cl) # :nodoc:
    cl.module_eval %q{