- fixed a few bad declarations.

wadsrc/static/zscript/actor.txt

@@ -419,8 +419,8 @@ class Actor : Thinker native
 	native void Howl();
 	native void DrawSplash (int count, double angle, int kind);
 	native void GiveSecret(bool printmsg = true, bool playsound = true);
-	native void GetCameraHeight();
-	native void GetGravity();
+	native double GetCameraHeight();
+	native double GetGravity();
 
 	native bool CheckClass(class<Actor> checkclass, int ptr_select = AAPTR_DEFAULT, bool match_superclass = false);
 	native void AddInventory(Inventory inv);

wadsrc/static/zscript/shared/powerups.txt

@@ -24,7 +24,7 @@ class Powerup : Inventory native
 	native double Strength;		// Meaning depends on powerup - currently used only by Invisibility
 
 	// Note, that while this is an inventory flag, it only has meaning on an active powerup.
-	virtual bool GetNoTeleportFreeze() { return bNoTeleportFreeze; }
+	override bool GetNoTeleportFreeze() { return bNoTeleportFreeze; }
 	
 }