Update gemfile for msys2

Author: sebastianrakel

Gemfile

@@ -1,10 +1,16 @@
 source ENV['GEM_SOURCE'] || 'https://rubygems.org'
 
+require 'uri'
+
 def location_for(place)
   if place =~ /^((?:git[:@]|https:)[^#]*)#(.*)/
     [{ :git => $1, :branch => $2, :require => false }]
-  elsif place =~ /^file:\/\/(.*)/
-    ['>= 0', { :path => File.expand_path($1), :require => false }]
+  elsif place.start_with?('file://')
+    path = URI(place).path
+    path = path.sub(%r{^/([A-Za-z]:/)}i, '\1')
+    path = File.expand_path(path)
+
+    ['>= 0', { path: path, require: false }]
   else
     [place, { :require => false }]
   end