Fix typo in debug message

Author: Ruben Bridgewater

index.js

@@ -112,8 +112,8 @@ RedisClient.prototype.install_stream_listeners = function () {
     });
 
     this.stream.on('data', function (buffer_from_socket) {
-        // The data.toString() has a significant impact on big chunks and therefor this should only be used if necessary
-        debug('Net read ' + this.address + ' id ' + this.connection_id); // + ': ' + data.toString());
+        // The buffer_from_socket.toString() has a significant impact on big chunks and therefor this should only be used if necessary
+        debug('Net read ' + self.address + ' id ' + self.connection_id); // + ': ' + buffer_from_socket.toString());
         self.reply_parser.execute(buffer_from_socket);
     });