Plugin coding error for conditional placeholder {not_all_day}

Dear events-manager team,

I like your plugin a lot and use it for our non-profit private choir.

While rearranging an events page, I came across the situation that both conditional placeholders, {all_day} and {not_all_day} showed the same behavior.

Checking your code, I think that I found the following error in events-manager/classes/em-event.php starting from line 2206:

elseif ($condition == 'all_day'){
//is it an all day event
$show_condition = !empty($this->event_all_day);
}elseif ($condition == 'not_all_day'){
//is not an all day event
$show_condition = !empty($this->event_all_day);
}

It would be great to correct this code in order to have the related conditional placeholder work as expected.

I tried the following solution, which seemed to work for me but of course, I cannot be sure whether this would work under all circumstances:

elseif ($condition == 'all_day'){
//is it an all day event
$show_condition = !empty($this->event_all_day);
}elseif ($condition == 'not_all_day'){
//is not an all day event
$show_condition = empty($this->event_all_day);
}

Thanks and kindest regards

Michael