Use client inside of http_client.start

lib/geocoder/lookups/base.rb

@@ -271,11 +271,11 @@ module Geocoder
           opts[:use_ssl] = use_ssl?
 
           http_client.start(*args, opts) do |client|
-            req = http_client::Get.new(uri.request_uri, configuration.http_headers)
+            req = client::Get.new(uri.request_uri, configuration.http_headers)
             if configuration.basic_auth
               req.basic_auth(configuration.basic_auth[:user], configuration.basic_auth[:password])
             end
-            http_client.request(req)
+            client.request(req)
           end
         end
       end