+ remove some compiler warnings

spring-data-redis/src/main/java/org/springframework/data/keyvalue/redis/support/atomic/CASUtils.java

@@ -49,6 +49,7 @@ abstract class CASUtils {
 
 	public static <T, K, V> T execute(final RedisOperations<K, V> ops, final K key, final Callable<T> callback) {
 		return ops.execute(new SessionCallback<T>() {
+			@SuppressWarnings("unchecked")
 			@Override
 			public T execute(RedisOperations operations) {
 				try {

spring-data-redis/src/main/java/org/springframework/data/keyvalue/redis/support/atomic/RedisAtomicInteger.java

@@ -150,6 +150,7 @@ public class RedisAtomicInteger extends Number implements Serializable, KeyBound
 	public boolean compareAndSet(final int expect, final int update) {
 		return generalOps.execute(new SessionCallback<Boolean>() {
 
+			@SuppressWarnings("unchecked")
 			@Override
 			public Boolean execute(RedisOperations operations) {
 				for (;;) {

spring-data-redis/src/main/java/org/springframework/data/keyvalue/redis/support/atomic/RedisAtomicLong.java

@@ -151,6 +151,7 @@ public class RedisAtomicLong extends Number implements Serializable, KeyBound<St
 	public boolean compareAndSet(final long expect, final long update) {
 		return generalOps.execute(new SessionCallback<Boolean>() {
 
+			@SuppressWarnings("unchecked")
 			@Override
 			public Boolean execute(RedisOperations operations) {
 				for (;;) {