Fix crash when closing otclient in debug mode

src/otclient/creatures.cpp

@@ -41,6 +41,13 @@ static bool isInZone(const Position& pos/* placePos*/,
            );
 }
 
+void CreatureManager::terminate()
+{
+    clearSpawns();
+    clear();
+    m_nullCreature = nullptr;
+}
+
 void Spawn::load(TiXmlElement* node)
 {
     Position centerPos = node->readPos("center");
@@ -276,14 +283,14 @@ void CreatureManager::loadCreatureBuffer(const std::string& buffer)
         if(attrib->ValueStr() != "look")
             continue;
 
-        m_loadCreatureBuffer(attrib, newType);
+        internalLoadCreatureBuffer(attrib, newType);
         break;
     }
 
     doc.Clear();
 }
 
-void CreatureManager::m_loadCreatureBuffer(TiXmlElement* attrib, const CreatureTypePtr& m)
+void CreatureManager::internalLoadCreatureBuffer(TiXmlElement* attrib, const CreatureTypePtr& m)
 {
     if(std::find(m_creatures.begin(), m_creatures.end(), m) != m_creatures.end())
         return;

src/otclient/creatures.h

@@ -99,6 +99,7 @@ public:
     CreatureManager();
     void clear() { m_creatures.clear(); }
     void clearSpawns();
+    void terminate();
 
     void loadMonsters(const std::string& file);
     void loadSingleCreature(const std::string& file);
@@ -119,7 +120,7 @@ public:
     const std::vector<CreatureTypePtr>& getCreatures() { return m_creatures; }
 
 protected:
-    void m_loadCreatureBuffer(TiXmlElement* elem, const CreatureTypePtr& m);
+    void internalLoadCreatureBuffer(TiXmlElement* elem, const CreatureTypePtr& m);
 
 private:
     std::vector<CreatureTypePtr> m_creatures;

src/otclient/otclient.cpp

@@ -79,7 +79,7 @@ void OTClient::init(const std::vector<std::string>& args)
 
 void OTClient::terminate()
 {
-    g_creatures.clear();
+    g_creatures.terminate();
     g_game.terminate();
     g_map.terminate();
     g_things.terminate();