- fixed: The TouchedActors array in the Dehacked parser was not freed after parsing was done.

- Initialize the alt HUD explicitly in D_DoomMain.
- don't let S_UnloadReverbDef leave a broken list of sound environments behind.
- Added more code to explicitly delete data before initializing it.

SVN r3039 (trunk)

src/d_dehacked.cpp

@@ -2880,6 +2880,8 @@ void FinishDehPatch ()
 	// Now that all Dehacked patches have been processed, it's okay to free StateMap.
 	StateMap.Clear();
 	StateMap.ShrinkToFit();
+	TouchedActors.Clear();
+	TouchedActors.ShrinkToFit();
 }
 
 void ModifyDropAmount(AInventory *inv, int dropamount);