patchfsck: Replace deprecated OPT_BOOLEAN by OPT_BOOL

> This task emerged from b04ba2bb4.
> All occurrences of the respective variables have been reviewed and none
> of them relied on the counting up mechanism, but all of them were
> using the variable as a true boolean.
>
> Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
> ---

>  builtin/fsck.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/builtin/fsck.c b/builtin/fsck.c
> index 9909b6d..39fa5e8 100644
> --- a/builtin/fsck.c
> +++ b/builtin/fsck.c
> @@ -611,15 +611,15 @@ static char const * const fsck_usage[] = {
>  
>  static struct option fsck_opts[] = {
>  	OPT__VERBOSE(&verbose, N_("be verbose")),
> -	OPT_BOOLEAN(0, "unreachable", &show_unreachable, N_("show unreachable objects")),
> +	OPT_BOOL(0, "unreachable", &show_unreachable, N_("show unreachable objects")),
>  	OPT_BOOL(0, "dangling", &show_dangling, N_("show dangling objects")),
> -	OPT_BOOLEAN(0, "tags", &show_tags, N_("report tags")),
> -	OPT_BOOLEAN(0, "root", &show_root, N_("report root nodes")),
> -	OPT_BOOLEAN(0, "cache", &keep_cache_objects, N_("make index objects head nodes")),
> -	OPT_BOOLEAN(0, "reflogs", &include_reflogs, N_("make reflogs head nodes (default)")),
> -	OPT_BOOLEAN(0, "full", &check_full, N_("also consider packs and alternate objects")),
> -	OPT_BOOLEAN(0, "strict", &check_strict, N_("enable more strict checking")),
> -	OPT_BOOLEAN(0, "lost-found", &write_lost_and_found,
> +	OPT_BOOL(0, "tags", &show_tags, N_("report tags")),
> +	OPT_BOOL(0, "root", &show_root, N_("report root nodes")),
> +	OPT_BOOL(0, "cache", &keep_cache_objects, N_("make index objects head nodes")),
> +	OPT_BOOL(0, "reflogs", &include_reflogs, N_("make reflogs head nodes (default)")),
> +	OPT_BOOL(0, "full", &check_full, N_("also consider packs and alternate objects")),
> +	OPT_BOOL(0, "strict", &check_strict, N_("enable more strict checking")),
> +	OPT_BOOL(0, "lost-found", &write_lost_and_found,
>  				N_("write dangling objects in .git/lost-found")),
>  	OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
>  	OPT_END(),