trouble after applying a wielded cream pie

<Someone> wrote:
> I can' t find this bug in the known bug list. If I missed I do apologize.
> It occurs on the standard windows nethack.exe. Just wield a cream pie
> and then apply it. Press x to switch weapons. Program in disorder.
> s - 1752440940 glorkum 32 26485 101's named ? (alternate weapon; not wielded).
> Greetings, <Someone>

It crashed with an access violation for me.

src/apply.c

@@ -2599,6 +2599,8 @@ struct obj *obj;
 			You_cant("see through all the sticky goop on your %s.",
 				body_part(FACE));
 	}
+
+	setnotworn(obj);
 	/* useup() is appropriate, but we want costly_alteration()'s message */
 	costly_alteration(obj, COST_SPLAT);
 	obj_extract_self(obj);