throwing and breaking glass wand in shop (trunk only)

<email deleted> wrote:
> - when in a hardware store, I put a glass wand out of a sack (the glass wand
> will cost you 266 zorkmids) and threw it in the shop => shattered into a
> thousand pieces BUT if I try to pay, I do not owe the shopkeeper anything !!!
> If I break a potion with a /oS, I have to pay !

src/dothrow.c

@@ -703,6 +703,10 @@ register boolean broken;
 		if (obj->unpaid) {
 		    (void)stolen_value(obj, u.ux, u.uy,
 				       (boolean)shkp->mpeaceful, FALSE);
+		    costly_alteration(obj, COST_DSTROY);
+		    /* costly_alteration() probably already called
+		       subfrombill() for the object, but just in case it
+		       didn't, call it again. If it did, this is a NOOP. */
 		    subfrombill(obj, shkp);
 		}
 		obj->no_charge = 1;