profiling: cope with configwith default value handling changes
Changeset 6ff6eb33f353 change 'configwith' behavior so that the default value is
run through the conversion function. In parallel a new user of 'configwith' got
introduced unaware of this coming behavior change. This broke profiling.
We resolve the situation by having the new conversion function cope with a
default value already using the right type.
(binary:application/octet-stream)