Polishing.

Avoid races in command unsubscribe fetching.

See #2226

Author: mp911de

src/main/java/org/springframework/data/redis/connection/lettuce/LettuceReactiveSubscription.java

@@ -89,7 +89,7 @@ public Mono<Void> pSubscribe(ByteBuffer... patterns) {
 
 	@Override
 	public Mono<Void> unsubscribe() {
-		return unsubscribe(channelState.getTargets().toArray(new ByteBuffer[channelState.getTargets().size()]));
+		return unsubscribe(channelState.getTargets().toArray(new ByteBuffer[0]));
 	}
 
 	@Override
@@ -103,7 +103,7 @@ public Mono<Void> unsubscribe(ByteBuffer... channels) {
 
 	@Override
 	public Mono<Void> pUnsubscribe() {
-		return pUnsubscribe(patternState.getTargets().toArray(new ByteBuffer[patternState.getTargets().size()]));
+		return pUnsubscribe(patternState.getTargets().toArray(new ByteBuffer[0]));
 	}
 
 	@Override