Make some destructors virtual, though we don't delete through parents

* It keeps compiling happy and warning-free

renderdoc/core/remote_access.cpp

@@ -398,6 +398,8 @@ struct RemoteAccess : public IRemoteAccess
 			SAFE_DELETE(ser);
 		}
 
+		virtual ~RemoteAccess() {}
+
 		bool Connected() { return m_Socket != NULL && m_Socket->Connected(); }
 		
 		void Shutdown()

renderdoc/core/remote_replay.cpp

@@ -267,7 +267,7 @@ struct RemoteRenderer : public IRemoteRenderer
 			m_RemoteDrivers.reserve(m.size());
 			for(auto it=m.begin(); it != m.end(); ++it) m_RemoteDrivers.push_back(*it);
 		}
-		~RemoteRenderer()
+		virtual ~RemoteRenderer()
 		{
 			SAFE_DELETE(m_Socket);
 		}

renderdoc/replay/replay_renderer.h

@@ -61,7 +61,7 @@ public:
 	uint32_t PickVertex(uint32_t frameID, uint32_t eventID, uint32_t x, uint32_t y);
 private:
 	ReplayOutput(ReplayRenderer *parent, void *w);
-	~ReplayOutput();
+	virtual ~ReplayOutput();
 	
 	void SetFrameEvent(int frameID, int eventID);
 	void SetContextFilter(ResourceId id, uint32_t firstDefEv, uint32_t lastDefEv);
@@ -127,7 +127,7 @@ struct ReplayRenderer : public IReplayRenderer
 {
 	public:
 		ReplayRenderer();
-		~ReplayRenderer();
+		virtual ~ReplayRenderer();
 
 		APIProperties GetAPIProperties();