ID-by-use shows ? for obvious-on-wield effects

[magnate]

Pick up an untried weapon. Wield it.

It will tell you about any obvious attributes (e.g. brands, stat boosts).

But it will leave ?s on the C screen for absent obvious attributes.

These ?s shouldn't be there - as soon as you wield it, you know the presence or absence of all obvious attributes.

Confirmed as a regression in v4 - does not occur in 3.4-dev.