Fix Jredis sort to store results under new key

DATAREDIS-135

- Also fix NPE on parsing null getPattern in
DefaultSortParameters

src/main/java/org/springframework/data/redis/connection/DefaultSortParameters.java

@@ -98,6 +98,10 @@ public class DefaultSortParameters implements SortParameters {
 	public void setGetPattern(byte[][] gPattern) {
 		getPattern.clear();
 
+		if(gPattern == null) {
+			return;
+		}
+
 		for (byte[] bs : gPattern) {
 			getPattern.add(bs);
 		}

src/main/java/org/springframework/data/redis/connection/jredis/JredisConnection.java

@@ -160,7 +160,7 @@ public class JredisConnection implements RedisConnection {
 
 	public Long sort(byte[] key, SortParameters params, byte[] storeKey) {
 		Sort sort = jredis.sort(JredisUtils.decode(key));
-		JredisUtils.applySortingParams(sort, params, null);
+		JredisUtils.applySortingParams(sort, params, storeKey);
 		try {
 			return Support.unpackValue(sort.exec());
 		} catch (Exception ex) {