fix the build

app/controllers/uploads_controller.rb

@@ -29,7 +29,7 @@ class UploadsController < ApplicationController
       return render_404 unless Discourse.store.internal?
       return render_404 if SiteSetting.prevent_anons_from_downloading_files && current_user.nil?
 
-      if upload = Upload.find_by(sha1: params[:sha]) || Upload.find_by(id: params[:id], url: request.fullpath)
+      if upload = Upload.find_by(sha1: params[:sha]) || Upload.find_by(id: params[:id], url: request.env["PATH_INFO"])
         opts = { filename: upload.original_filename }
         opts[:disposition] = 'inline' if params[:inline]
         send_file(Discourse.store.path_for(upload), opts)

spec/controllers/uploads_controller_spec.rb

@@ -133,7 +133,7 @@ describe UploadsController do
     end
 
     it "returns 404 when the upload doens't exist" do
-      Upload.expects(:find_by).with(sha1: sha).returns(nil)
+      Upload.stubs(:find_by).returns(nil)
 
       get :show, site: site, sha: sha, extension: "pdf"
       expect(response.response_code).to eq(404)