Damage: Don't end speech on death

In Arx Fatalis 1.21. ARX_SPEECH_ReleaseIOSpeech did not work correctly.
This was fixed in commit aac2d8c for Arx Libertatis 1.0.3 because it
left dangling references after entity destruction.

However, ARX_SPEECH_ReleaseIOSpeech also got called on NPC death where
that fix meant that the death scream no longer gets played. Fix that.

Fixes: issue #1579
(cherry picked from commit f24f6f6)

src/game/Damage.cpp

@@ -550,8 +550,6 @@ void ARX_DAMAGES_ForceDeath(Entity & io_dead, Entity * io_killer) {
 
 	ARX_NPC_Behaviour_Reset(&io_dead);
 
-	ARX_SPEECH_ReleaseIOSpeech(&io_dead);
-
 	ARX_SCRIPT_Timer_Clear_For_IO(&io_dead);
 
 	if(io_dead.mainevent != SM_DEAD) {

src/game/Entity.cpp

@@ -65,6 +65,7 @@ ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
 
 #include "gui/Dragging.h"
 #include "gui/Interface.h"
+#include "gui/Speech.h"
 #include "gui/hud/SecondaryInventory.h"
 
 #include "io/log/Logger.h"
@@ -286,6 +287,8 @@ void Entity::cleanReferences() {
 	}
 	gameFlags &= ~GFLAG_ISINTREATZONE;
 
+	ARX_SPEECH_ReleaseIOSpeech(this);
+
 	ARX_INTERACTIVE_DestroyDynamicInfo(this);
 
 	removeFromInventories(this);

src/scene/Interactive.cpp

@@ -200,8 +200,6 @@ void ARX_INTERACTIVE_DestroyDynamicInfo(Entity * io)
 		}
 	}
 
-	ARX_SPEECH_ReleaseIOSpeech(io);
-
 	ARX_SCRIPT_EventStackClearForIo(io);
 
 	if(ValidIONum(n)) {