Hello,

* start d-i
* get wireless board detected
* choose an ESSID among the list proposed by netcfg
* type a password which is not the proper password

Result: netcfg prompts for a manual ESSID without even making the
prefilled value the ESSID that was chosen among the list.

This is surprising, I was about to type the password again before
realizing that it's the ESSID which is being asked.

Expected result: either (by preference order):
- netcfg should prompt for the password again (that's really what I
  would have expected)
- netcfg should get back the the ESSID list (and one can choose "manual
  selection" there)
- netcfg should prompt for manual ESSID, but at the very least prefill
  it with what was chosen previously.

Samuel