Satisfy rubocop on 2.3

Author: waterlink

Gemfile

@@ -3,7 +3,7 @@ source "https://rubygems.org"
 gemspec
 
 ruby_version = RUBY_VERSION.to_f
-rubocop_platform = [:ruby_20, :ruby_21, :ruby_22]
+rubocop_platform = [:ruby_20, :ruby_21, :ruby_22, :ruby_23]
 rubocop_platform = [:ruby_20, :ruby_21] if ruby_version < 2.0
 
 group :test do

lib/rack_reverse_proxy/rule.rb

@@ -153,11 +153,11 @@ def substitute(url)
       end
 
       def transform(response, request_uri)
-        found.inject(response) do |response, match|
+        found.inject(response) do |accumulator, match|
           if match.respond_to?(:transform)
-            match.transform(response, request_uri)
+            match.transform(accumulator, request_uri)
           else
-            response
+            accumulator
           end
         end
       end

spec/rack/reverse_proxy_spec.rb

@@ -586,18 +586,19 @@ def app
     describe "with a matching and transforming class" do
       #:nodoc:
       class MatcherAndTransformer
-        def self.match(path)
+        def self.match(_path)
           MatcherAndTransformer.new
         end
 
-        def url(path)
+        def url(_path)
           "http://example.org/redirecting"
         end
 
         def transform(response, request_uri)
           status, headers, body = response
           location = headers["Location"]
-          headers["Location"] = "?url=" + CGI.escape(location) + "&request_uri=" + CGI.escape(request_uri.to_s)
+          headers["Location"] = "?url=" + CGI.escape(location) +
+                                "&request_uri=" + CGI.escape(request_uri.to_s)
           [status, headers, body]
         end
       end
@@ -617,7 +618,8 @@ def app
 
         get "/"
         expect(last_response.headers["Location"])
-          .to eq("?url=http%3A%2F%2Fexample.org%2Ftarget&request_uri=http%3A%2F%2Fexample.org%2Fredirecting")
+          .to eq("?url=http%3A%2F%2Fexample.org%2Ftarget" \
+            "&request_uri=http%3A%2F%2Fexample.org%2Fredirecting")
       end
     end