Revert "Reduce more Array object creations"

This reverts commit cac0e0431375073f4bebc5df8598bf79e863c086.

Reason: web-console gem expects the existence of `filter_proxy` and overrides this method
https://github.com/rails/web-console/blob/v4.2.0/lib/web_console/request.rb#L31-L36

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
-        ips.detect {|ip| @proxies.none? {|p| p === ip } } || (@proxies.none? {|p| p === remote_addr} && remote_addr) || ips.last || remote_addr
+        filter_proxies(ips + [remote_addr]).first || ips.last || remote_addr
       end
 
       # Memoizes the value returned by #calculate_ip and returns it for
@@ -183,6 +183,12 @@ 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