Fix new Sonar smells

Author: artembilan

spring-integration-core/src/main/java/org/springframework/integration/support/utils/IntegrationUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -58,7 +58,7 @@ public final class IntegrationUtils {
 	/**
 	 * Should be set to TRUE on CI plans and framework developer systems.
 	 */
-	public static final boolean fatalWhenNoBeanFactory =
+	public static final boolean FATAL_WHEN_NO_BEANFACTORY =
 			Boolean.parseBoolean(System.getenv("SI_FATAL_WHEN_NO_BEANFACTORY"));
 
 	private IntegrationUtils() {
@@ -96,7 +96,7 @@ public static MessageBuilderFactory getMessageBuilderFactory(@Nullable BeanFacto
 		}
 		else {
 			LOGGER.debug("No 'beanFactory' supplied; cannot find MessageBuilderFactory, using default.");
-			if (fatalWhenNoBeanFactory) {
+			if (FATAL_WHEN_NO_BEANFACTORY) {
 				throw new IllegalStateException("All Message creators need a BeanFactory");
 			}
 		}

spring-integration-kafka/src/main/java/org/springframework/integration/kafka/outbound/KafkaProducerMessageHandler.java

@@ -182,7 +182,9 @@ public KafkaProducerMessageHandler(final KafkaTemplate<K, V> kafkaTemplate) {
 					+ "configured to read uncommitted records");
 		}
 		determineSendTimeout();
-		this.deliveryTimeoutMsProperty = this.sendTimeoutExpression.getValue(Long.class) - TIMEOUT_BUFFER;
+		this.deliveryTimeoutMsProperty =
+				this.sendTimeoutExpression.getValue(Long.class) // NOSONAR - never null after determineSendTimeout()
+						- TIMEOUT_BUFFER;
 	}
 
 	private void determineSendTimeout() {