make php-cs-fixer happy

Author: alexbusu-motork

pkg/rdkafka/RdKafkaProducer.php

@@ -70,7 +70,7 @@ public function send(Destination $destination, Message $message): void
     /**
      * @return RdKafkaProducer
      */
-    public function setDeliveryDelay(int $deliveryDelay = null): Producer
+    public function setDeliveryDelay(?int $deliveryDelay = null): Producer
     {
         if (null === $deliveryDelay) {
             return $this;
@@ -87,7 +87,7 @@ public function getDeliveryDelay(): ?int
     /**
      * @return RdKafkaProducer
      */
-    public function setPriority(int $priority = null): Producer
+    public function setPriority(?int $priority = null): Producer
     {
         if (null === $priority) {
             return $this;
@@ -101,7 +101,7 @@ public function getPriority(): ?int
         return null;
     }
 
-    public function setTimeToLive(int $timeToLive = null): Producer
+    public function setTimeToLive(?int $timeToLive = null): Producer
     {
         if (null === $timeToLive) {
             return $this;