fix bug

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

@@ -569,12 +569,14 @@ public class WxCouponOrderServiceImpl implements WxCouponOrderService {
 	            }
 	            
 	            Long merchanId = merchantProductIdMap.get(co.getCouponId());
-	            if (merchanId == 999L) {
-	            	co.setMerchantName("多商户通用");
-		            co.setMerchantId(0L);
-	            }else {
-	            	co.setMerchantName(merchantNameMap.get(merchanId));
-		            co.setMerchantId(merchanId);
+	            if (null != merchanId) {
+		            if (merchanId == 999L) {
+		            	co.setMerchantName("多商户通用");
+			            co.setMerchantId(0L);
+		            }else {
+		            	co.setMerchantName(merchantNameMap.get(merchanId));
+			            co.setMerchantId(merchanId);
+		            }
 	            }
 	            
 //	            WxCUserBasicInfo basicInfo = wxCUserBasicInfoService.getById(co.getCUserId(), co.getFinalTenantId());