Fixes the case when scdaemon prompts for card insertion.
* scd/app-openpgp.c (do_set_pin_prompt): Fix indentation. No longer
unset the prompt with '-' since the OPTION command without a value
does this anyway.
* scd/app.c (expand_pin_prompt): Fix indentation.
* scd/command.c (set_pinentry_prompt): Set both the default and
application prompt when available.