FIX: redirect to original URL after social signup

spec/requests/users_controller_spec.rb

@@ -2571,6 +2571,18 @@ describe UsersController do
       expect(response).to redirect_to("/")
     end
 
+    context 'when cookies contains a destination URL' do
+      it 'should redirect to the URL' do
+        sign_in(Fabricate(:user))
+        destination_url = 'http://thisisasite.com/somepath'
+        cookies[:destination_url] = destination_url
+
+        get "/u/account-created"
+
+        expect(response).to redirect_to(destination_url)
+      end
+    end
+
     context "when the user account is created" do
       include ApplicationHelper