fix bug

mallinkService/src/main/java/com/iformall/service/impl/WxCouponServiceImpl.java

@@ -768,6 +768,9 @@ public class WxCouponServiceImpl implements WxCouponService {
 
             if (EnumPayMchType.DIRECT.equals(payMchType)) {
                 WxMerchant makeMerchant = getDirectPayAccountMerchant(merchantList,record);
+                if (null == makeMerchant) {
+                	throw new MallinkException(ErrorCode.SYS_PARAMETER_ERROR.getCode(), "没有收款商户");
+                }
                 record.setMakeMerchantId(makeMerchant.getId());
                 WxProfitSharingReceiver receiver = payShareServie.getReceiver(payAccount, makeMerchant.getId(), null, payMchType.getCode());