This patch removes the magic constant we used when calling
`trace_unwrap_exit()` or `map_err_trace_exit_unwrap()`.
We used to call it with `1` as parameter, where the number was the exit
code to use. Now the implementation of the function does it
automatically (using 1 (one) as exit code).
All calls of these functions were fixed. Thanks to vim this was easy.
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
