Reduce more Array object creations

Author: amatsuda

actionpack/lib/action_dispatch/middleware/remote_ip.rb

@@ -159,7 +159,7 @@ def calculate_ip
 
         # If every single IP option is in the trusted list, return the IP
         # that's furthest away
-        filter_proxies(ips + [remote_addr]).first || ips.last || remote_addr
+        ips.detect {|ip| @proxies.none? {|p| p === ip } } || (@proxies.none? {|p| p === remote_addr} && remote_addr) || ips.last || remote_addr
       end
 
       # Memoizes the value returned by #calculate_ip and returns it for
@@ -183,12 +183,6 @@ def ips_from(header) # :doc:
         end
         ips
       end
-
-      def filter_proxies(ips) # :doc:
-        ips.reject do |ip|
-          @proxies.any? { |proxy| proxy === ip }
-        end
-      end
     end
   end
 end