[ruby-cvs:72891] nobu:r65791 (trunk): update-deps: fix runtime error [ci skip]

[nobu at ruby-lang.org]

nobu	2018-11-19 08:29:40 +0900 (Mon, 19 Nov 2018)

  New Revision: 65791

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=65791

  Log:
    update-deps: fix runtime error [ci skip]
    
    * tool/update-deps (init_global): environment strings are frozen.

  Modified files:
    trunk/tool/update-deps