Fix battlemode item boxes not respawning (closes #135)

src/k_battle.c

@@ -572,7 +572,6 @@ void K_RespawnBattleBoxes(void)
 		newmobj->flags2 = box->flags2;
 		P_RemoveMobj(box); // make sure they disappear
 		numgotboxes--; // you've restored a box, remove it from the count
-		//continue; -- irrelevant?
 	}
 
 	if (numgotboxes < 0)

src/p_mobj.c

@@ -13686,7 +13686,6 @@ static boolean P_SetupSpawnedMapThing(mapthing_t *mthing, mobj_t *mobj, boolean
 	case MT_RANDOMITEM:
 	{
 		mobj->flags2 |= MF2_BOSSNOTRAP; // mark as here on map start
-		nummapboxes++;
 		break;
 	}
 	case MT_ITEMCAPSULE:

src/p_setup.c

@@ -782,6 +782,9 @@ static void P_SpawnMapThings(boolean spawnemblems)
 		if (!spawnemblems && mt->type == mobjinfo[MT_EMBLEM].doomednum)
 			continue;
 
+		if (mt->type == mobjinfo[MT_RANDOMITEM].doomednum)
+			nummapboxes++;
+
 		// Don't spawn non-patch objects of this type if they are uneeded
 		if (mt->patch == false && basemaptyperemoval[mt->type] == true)
 			continue;