fix 退款余额为null

netflix-service/src/main/java/com/cyksj/service/user/impl/UserBenefitsServiceImpl.java

@@ -73,7 +73,7 @@ public class UserBenefitsServiceImpl implements UserBenefitsService {
 
 	@Override
 	public void addUserBalance(Long userId, BigDecimal addBalance, UserBalanceSourceRecord.Source source, Long yhsId, Long orderId, String detail, Boolean isRecord) {
-		if (addBalance.compareTo(BigDecimal.ZERO) <= 0) {
+		if (addBalance == null || addBalance.compareTo(BigDecimal.ZERO) <= 0) {
 			return;
 		}
 		while (true) {