kazu	2018-09-01 00:25:52 +0900 (Sat, 01 Sep 2018)

  New Revision: 64599

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=64599

  Log:
    Try to add workaround for warnings
    
    ```
    .../ext/psych/lib/psych/versions.rb:4: warning: already initialized constant Psych::VERSION
    .../.ext/common/psych/versions.rb:4: warning: previous definition of VERSION was here
    ```

  Modified files:
    trunk/ext/psych/lib/psych/versions.rb
Index: ext/psych/lib/psych/versions.rb
===================================================================
--- ext/psych/lib/psych/versions.rb	(revision 64598)
+++ ext/psych/lib/psych/versions.rb	(revision 64599)
@@ -1,7 +1,7 @@ https://github.com/ruby/ruby/blob/trunk/ext/psych/lib/psych/versions.rb#L1
 # frozen_string_literal: true
 module Psych
   # The version is Psych you're using
-  VERSION = '3.1.0.pre1'
+  VERSION ||= '3.1.0.pre1'
 
   if RUBY_ENGINE == 'jruby'
     DEFAULT_SNAKEYAML_VERSION = '1.21'.freeze

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