striking ID followup

- only ID wand of striking, not spellbook of force bolt, seeing the spell
cast does not make the book known

src/zap.c

@@ -1684,7 +1684,7 @@ bhitpile(obj,fhito,tx,ty)
 	   because that last call might end up operating on our `next_obj'
 	   (below), rather than on the current object, if it happens to
 	   encounter a statue which mustn't become animated. */
-	if (t && t->ttyp == STATUE_TRAP &&
+	if (t && t->ttyp == STATUE_TRAP && obj->otyp == WAN_STRIKING &&
 	    activate_statue_trap(t, tx, ty, TRUE))
 	    makeknown(obj->otyp);
     }