[ruby-cvs:73229] mrkn:r66129 (trunk): Fix rubyspec of bigdecimal for ruby <2.6

[mrkn at ruby-lang.org]

mrkn	2018-12-02 15:43:15 +0900 (Sun, 02 Dec 2018)

  New Revision: 66129

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=66129

  Log:
    Fix rubyspec of bigdecimal for ruby <2.6

  Modified files:
    trunk/spec/ruby/library/bigdecimal/BigDecimal_spec.rb