fix bug

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

@@ -134,14 +134,14 @@ public class WxCUserTagsServiceImpl implements WxCUserTagsService {
 		if (tag.getType().getFlag() == EnumTagTypeFlag.FLAG_SINGLE){
 			while(it.hasNext()){
 				Long id = it.next();
-				if(null!=EnumTag.getEnum(id) && EnumTag.getEnum(id).getType() == tag.getType()){
+				if(null != id && null!=EnumTag.getEnum(id) && EnumTag.getEnum(id).getType() == tag.getType()){
 					it.remove();
 				}
 			}
 		} else {
 			while(it.hasNext()){
 				Long id = it.next();
-				if(id.equals(tag.getCode())){
+				if(null != id && id.equals(tag.getCode())){
 					it.remove();
 				}
 			}