[monitoring-plugin-perl] Handling if only the warning or critical is set

[A Codeweavers Infrastructure Bod]

 Module: monitoring-plugin-perl
 Branch: master
 Commit: 1b5dbf6c09952a69843e08bd8943506e98bcfe1a
 Author: A Codeweavers Infrastructure Bod 
<36475663+infraweav...@users.noreply.github.com>
   Date: Mon Sep 14 09:52:29 2020 +0100
    URL: 
https://www.monitoring-plugins.org/repositories/monitoring-plugin-perl/commit/?id=1b5dbf6

Handling if only the warning or critical is set

---

 lib/Monitoring/Plugin.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Monitoring/Plugin.pm b/lib/Monitoring/Plugin.pm
index 3660ba7..7a4617d 100644
--- a/lib/Monitoring/Plugin.pm
+++ b/lib/Monitoring/Plugin.pm
@@ -159,7 +159,7 @@ sub getopts {
        $self->set_thresholds(
                warning  => $self->opts->warning,
                critical => $self->opts->critical,
-       ) if ( defined $self->opts->warning && defined $self->opts->critical );
+       ) if ( defined $self->opts->warning || defined $self->opts->critical );
 }
 
 sub _check_for_opts {