Segmental fault occurs when using fiddle 1.0.3 on Windows

[kojix2]

There are some obstacles to using the fiddle gem in Windows.

1. Loading a fiddle gem just generates a lot of warnings.
   ruby/fiddle#48

2. RubyInstaller::Runtime.add_dll_directory raises a Segmental fault.
   

   GR.rb/lib/gr_commons/search_shared_library.rb

   Line 38 in e31ff24

    RubyInstaller::Runtime.add_dll_directory(File.dirname(path)) 

   
   However, Segmental fault does not occur when using bundle exec.

[kojix2]

Report to fiddle repository
ruby/fiddle#50