Fix new Sonar issues

Author: garyrussell

spring-kafka/src/main/java/org/springframework/kafka/config/StreamsBuilderFactoryBean.java

@@ -209,7 +209,7 @@ public void setUncaughtExceptionHandler(Thread.UncaughtExceptionHandler exceptio
 	 * @since 2.8
 	 */
 	public void setStreamsUncaughtExceptionHandler(StreamsUncaughtExceptionHandler streamsUncaughtExceptionHandler) {
-		this.streamsUncaughtExceptionHandler = streamsUncaughtExceptionHandler;
+		this.streamsUncaughtExceptionHandler = streamsUncaughtExceptionHandler; // NOSONAR (sync)
 	}
 
 	public void setStateRestoreListener(StateRestoreListener stateRestoreListener) {

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

@@ -96,7 +96,7 @@ public void setAckAfterHandle(boolean ackAfterHandle) {
 	public void handle(Exception thrownException, ConsumerRecords<?, ?> records,
 			Consumer<?, ?> consumer, MessageListenerContainer container, Runnable invokeListener) {
 
-		if (records.count() == 0) {
+		if (records == null || records.count() == 0) {
 			LOGGER.error(thrownException, "Called with no records; consumer exception");
 			return;
 		}