FIX: Use hostname and port passed to the proc. There are no instance …

…variables (#45)

lib/discourse_antivirus/clamav_services_pool.rb

@@ -20,7 +20,7 @@ def connection_factory
       @factory ||=
         Proc.new do |hostname, port|
           begin
-            TCPSocket.new(@hostname, @port, connect_timeout: 3)
+            TCPSocket.new(hostname, port, connect_timeout: 3)
           rescue StandardError
             nil
           end