rustdoc help function breaks exit when typing

[dns2utf8]

Steps to reproduce:

1. open the docs
2. klick somewhere so the focus goes away from the search bar
3. press ?
4. start typing letters or numbers, more than 3
5. see the query change in the blurred background
6. pressing Esc does no longer close the dialog

cc: @GuillaumeGomez

[kennytm]

Step 4 should should be "press S".

As a workaround, you could close by pressing Tab then Esc.

[dns2utf8]

The problem is that after you press ? you get the overlay with the help text and should not be able to submit keystrokes to the main UI. Maybe the help should close on the first keystroke.

[GuillaumeGomez]

I'm gonna fix it soon.

[dns2utf8]

@kennytm yes you are right. I was hammering over "S" too