When template compile is disabled, an "or" statement, written with the pipe syntax will return false when it should not

If the "or" statement is written with 2 arguments it will work fine regardless TemplateCompile is enabled or not.

Steps to reproduce

1. Disable TemplateCompile in the [TemplateSettings] section of your site.ini.append.php :

[TemplateSettings]
TemplateCompile=disabled

2. Append the following code into a template

Piped OR : 
{if true()|or(false())}
    OK
{else}
    KO
{/if}
<br />

2 Args OR :
{if or(true(),false())}
    OK
{else}
    KO
{/if}
<br />

3. The output will be :

> Piped OR : KO
> 2 Args OR : OK