[mingw] finally fix broken compilation after rev 3183

CCallback.cpp

@@ -132,7 +132,7 @@ bool CCallback::dismissHero(const CGHeroInstance *hero)
 }
 
 // int CCallback::getMySerial() const
-// {	
+// {
 // 	boost::shared_lock<boost::shared_mutex> lock(*gs->mx);
 // 	return gs->players[player].serial;
 // }
@@ -287,13 +287,19 @@ void CCallback::buildBoat( const IShipyard *obj )
 	sendRequest(&bb);
 }
 
-CCallback::CCallback( CGameState * GS, boost::optional<TPlayerColor> Player, CClient *C ) 
+CCallback::CCallback( CGameState * GS, boost::optional<TPlayerColor> Player, CClient *C )
 	:CBattleCallback(GS, Player, C)
 {
 	waitTillRealize = false;
 	unlockGsWhenWaiting = false;
 }
 
+CCallback::~CCallback()
+{
+//trivial, but required. Don`t remove.
+}
+
+
 const CGPathNode * CCallback::getPathInfo( int3 tile )
 {
 	if (!gs->map->isInTheMap(tile))
@@ -355,7 +361,7 @@ void CCallback::validatePaths()
 	if(h  && ( cl->pathInfo->hero != h							//wrong hero
 		       || cl->pathInfo->hpos != h->getPosition(false)  //wrong hero positoin
 		       || !cl->pathInfo->isValid)) //paths invalidated by game event
-	{ 
+	{
 		recalculatePaths();
 	}
 }

CCallback.h

@@ -44,7 +44,7 @@ public:
 	//hero
 	virtual bool moveHero(const CGHeroInstance *h, int3 dst) =0; //dst must be free, neighbouring tile (this function can move hero only by one tile)
 	virtual bool dismissHero(const CGHeroInstance * hero)=0; //dismisses given hero; true - successfuly, false - not successfuly
-	virtual void dig(const CGObjectInstance *hero)=0; 
+	virtual void dig(const CGObjectInstance *hero)=0;
 	virtual void castSpell(const CGHeroInstance *hero, SpellID spellID, const int3 &pos = int3(-1, -1, -1))=0; //cast adventure map spell
 
 	//town
@@ -89,7 +89,7 @@ public:
 	CBattleCallback(CGameState *GS, boost::optional<TPlayerColor> Player, CClient *C);
 	int battleMakeAction(BattleAction* action) OVERRIDE;//for casting spells by hero - DO NOT use it for moving active stack
 	bool battleMakeTacticAction(BattleAction * action) OVERRIDE; // performs tactic phase actions
-	
+
 	friend class CCallback;
 	friend class CClient;
 };
@@ -102,6 +102,7 @@ private:
 
 public:
 	CCallback(CGameState * GS, boost::optional<TPlayerColor> Player, CClient *C);
+	virtual ~CCallback();
 
 	//client-specific functionalities (pathfinding)
 	virtual const CGPathNode *getPathInfo(int3 tile); //uses main, client pathfinder info
@@ -141,7 +142,7 @@ public:
 	void save(const std::string &fname);
 	void sendMessage(const std::string &mess);
 	void buildBoat(const IShipyard *obj);
-	void dig(const CGObjectInstance *hero); 
+	void dig(const CGObjectInstance *hero);
 	void castSpell(const CGHeroInstance *hero, SpellID spellID, const int3 &pos = int3(-1, -1, -1));
 
 //friends