add kafka tx manager null check

.

Signed-off-by: moonyougnCHAE <[email protected]>

Author: moonyoungCHAE

spring-kafka/src/main/java/org/springframework/kafka/listener/KafkaMessageListenerContainer.java

@@ -3080,7 +3080,7 @@ else if (!this.autoCommit && (!this.isAnyManualAck || commitRecovered)) {
 		}
 
 		private void sendOffsetsToTransaction() {
-			if (this.kafkaTxManager != null && TransactionSynchronizationManager.getResource(this.kafkaTxManager.getProducerFactory()) == null) {
+			if (this.kafkaTxManager == null || TransactionSynchronizationManager.getResource(this.kafkaTxManager.getProducerFactory()) == null) {
 				return;
 			}
 			handleAcks();