+ add some explanation

centreon-plugins/centreon/plugins/script.pm

@@ -40,10 +40,19 @@ sub new {
     $self->{plugin} = undef;
     $self->{help} = undef;
 
+    # Avoid to destroy because it keeps a ref on the object. 
+    # A problem if we execute it multiple times in the same perl execution
+    # Use prepare_destroy
     $self->set_signal_handlers;
     return $self;
 }
 
+sub prepare_destroy {
+    my $self = shift;
+
+    delete $handlers{DIE}->{$self};
+}
+
 sub set_signal_handlers {
     my $self = shift;