Ensure we install the database backend gems on Windows

platform `:ruby` is only MRI on Linux or Mac. Windows MRI shows up as
`:mswin` or `:mswin64` depending on if it was installed as 32 or 64 bit. I
am unsure if this will cause conflicts with JRuby on Windows, but I don't
have the means to test this at the moment.

1 files changed, 1 insertions, 1 deletions

diff --git a/Gemfile b/Gemfile
index 932ac87e77..c25fecc249 100644
--- a/Gemfile
+++ b/Gemfile
@@ -80,7 +80,7 @@ group :test do
   gem 'benchmark-ips'
 end
 
-platforms :ruby do
+platforms :ruby, :mswin, :mswin64 do
   gem 'nokogiri', '>= 1.6.7'
 
   # Needed for compiling the ActionDispatch::Journey parser.