Make clang a little happier

Signed-off-by: Tom Flynn <tom.flynn@gmail.com>
Change-Id: Iffb8a1e00a03de580f1527480652612ecdb3285b

Author: tomflynn

agent-ovs/ovs/include/ContractStatsManager.h

@@ -77,7 +77,7 @@ class ContractStatsManager : public PolicyStatsManager {
     /*
      * Derived class API to delete indexth counter object
      */
-    void clearCounterObject(const std::string& key,uint8_t index) override;
+    virtual void clearCounterObject(const std::string& key,uint8_t index) override;
 
     /** Interface: ObjectListener */
     void objectUpdated(opflex::modb::class_id_t class_id,

agent-ovs/ovs/include/SecGrpStatsManager.h

@@ -66,7 +66,7 @@ class SecGrpStatsManager : public PolicyStatsManager {
      * @param key the key of the object to remove
      * @param index the index of the counter to remove
      */
-    void clearCounterObject(const std::string& key,uint8_t index);
+    virtual void clearCounterObject(const std::string& key,uint8_t index);
 
     /** Interface: ObjectListener */
     void objectUpdated(opflex::modb::class_id_t class_id,