html_select_time Meridian Default Error

What steps will reproduce the problem?
1. {html_select_time field_array='pt' prefix='' use_24_hours=false 
display_seconds=false hour_empty='-Hour-' minute_empty='-Minute-' 
meridian_empty='-AM/PM-' time=$selectedTime} 
2. $selectedTime is an empty variable (but would have Hour, Minute, and 
Meridian keys if there was a selected time). 

What is the expected output?
There shouldn't be a selected value since its passed an empty variable / array.
<select name="pt[Meridian]">
<option value="">-AM/PM-</option>
<option value="am">AM</option>
<option value="pm">PM</option>
</select> 

What do you see instead?
The AM is incorrectly marked as selected, which after posting confuses the hour 
and minute fields (which were left empty, but after the post have values in 
them).

<select name="pt[Meridian]">
<option value="">-AM/PM-</option>
<option value="am" selected="selected">AM</option>
<option value="pm">PM</option>
</select> 

What version of the product are you using? On what operating system?
Smarty 3.1.14 on CentOS 6.4 with PHP 5.3.3.

Please provide any additional information below.
I think the fix can be as simple as adding "$_hour > 0 && " to line 348:
$_html_meridian .= '<option value="am"'. ($_hour > 0 && $_hour < 12 ? ' 
selected="selected"' : '') .'>AM</option>' . $option_separator
. '<option value="pm"'. ($_hour < 12 ? '' : ' selected="selected"') 
.'>PM</option>' . $option_separator
. '</select>';

Original issue reported on code.google.com by gzmarket...@gmail.com on 12 Sep 2013 at 5:53

ranlt / smarty-php

html_select_time Meridian Default Error #153