[fix #95262050] don't use Array#to_h for ruby 2.0.
[fix #95262050] don't use Array#to_h for ruby 2.0.

takaokouji/smalruby-editor,smalruby/smalruby-editor,Ikuyadeu/smalruby-editor,Ikuyadeu/smalruby-editor,smalruby/smalruby-editor,Ikuyadeu/smalruby-editor,smalruby/smalruby-editor,takaokouji/smalruby-editor,takaokouji/smalruby-editor