adding missing cleanup for SoundManager

apps/openmw/mwbase/soundmanager.hpp

@@ -147,6 +147,8 @@ namespace MWBase
             virtual void update(float duration) = 0;
 
             virtual void setListenerPosDir(const Ogre::Vector3 &pos, const Ogre::Vector3 &dir, const Ogre::Vector3 &up) = 0;
+
+            virtual void clear() = 0;
     };
 }
 

apps/openmw/mwsound/soundmanagerimp.cpp

@@ -705,4 +705,13 @@ namespace MWSound
     {
         return bytes / framesToBytes(1, config, type);
     }
+
+    void SoundManager::clear()
+    {
+        for (SoundMap::iterator iter (mActiveSounds.begin()); iter!=mActiveSounds.end(); ++iter)
+            iter->first->stop();
+
+        mActiveSounds.clear();
+        stopMusic();
+    }
 }

apps/openmw/mwsound/soundmanagerimp.hpp

@@ -148,6 +148,8 @@ namespace MWSound
         virtual void update(float duration);
 
         virtual void setListenerPosDir(const Ogre::Vector3 &pos, const Ogre::Vector3 &dir, const Ogre::Vector3 &up);
+
+        virtual void clear();
     };
 }
 

apps/openmw/mwstate/statemanagerimp.cpp

@@ -15,6 +15,7 @@
 #include "../mwbase/windowmanager.hpp"
 #include "../mwbase/mechanicsmanager.hpp"
 #include "../mwbase/scriptmanager.hpp"
+#include "../mwbase/soundmanager.hpp"
 
 #include "../mwworld/player.hpp"
 #include "../mwworld/class.hpp"
@@ -27,6 +28,7 @@ void MWState::StateManager::cleanup()
 {
     if (mState!=State_NoGame)
     {
+        MWBase::Environment::get().getSoundManager()->clear();
         MWBase::Environment::get().getDialogueManager()->clear();
         MWBase::Environment::get().getJournal()->clear();
         MWBase::Environment::get().getScriptManager()->getGlobalScripts().clear();