Bug#949007: debian-policy: Typo in example

[Jonathan Nieder <jrnieder@gmail.com>]

Niels Thykier wrote:

> In
> https://www.debian.org/doc/debian-policy/ch-source.html#s-debianrules-gainrootapi
> we find the following example:
>
> """
> Examples of valid use of the gain root command:
>
> # sh-syntax (assumes set -e semantics for error handling)
> $DEB_GAIN_ROOT_CMD some-cmd --which-requires-root
>
> # perl
> my @cmd = ('some-cmd', '--which-requires-root');
> unshift(@cmd, split(' ', $ENV{DEB_GAIN_ROOT_CMD})) if $ENV{DEB_GAIN_ROOT_CMD};
> system(@cmd) == or die("@cmd failed");
> """
>
> The Perl code is invalid.  There is missing a 0 after "==" and before "or die(...)".

(I don't think this is normative, so probably not needed, but just in
case:)

Seconded.  Thanks for catching it.

Sincerely,
Jonathan