SWDEV-435168 - Added virtual destructor in StreamCallback

Change-Id: I548f34e4f4208658a5a6c35927fc424415186354

hipamd/src/hip_event.hpp

@@ -34,6 +34,8 @@ protected:
       : userData_(userData) {}
 
   virtual void CL_CALLBACK callback() = 0;
+
+  virtual ~StreamCallback() {};
 };
 
 class StreamAddCallback : public StreamCallback {