lib/mini_magick/utilities.rb in mini_magick-4.5.1 vs lib/mini_magick/utilities.rb in mini_magick-4.6.0

@@ -12,10 +12,10 @@
     # @example
     #   MiniMagick::Utilities.which('ruby') #=> "/usr/bin/ruby"
     #
     def which(cmd)
       exts = ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') : ['']
-      ENV['PATH'].split(File::PATH_SEPARATOR).each do |path|
+      ENV.fetch('PATH').split(File::PATH_SEPARATOR).each do |path|
         exts.each do |ext|
           exe = File.join(path, "#{cmd}#{ext}")
           return exe if File.executable? exe
         end
       end