bundle2: remove an explicit packing
The final writing of the empty part was done explicitly. We now using proper
pack call using symbolic constant. This open simple change in the bundle2
format.
<div>
<a class="title" href="{url|urlescape}rev/{node|short}{sessionvars%urlparameter}"><span class="age">{date|rfc822date}</span>{desc|strip|firstline|escape|nonempty}<span class="logtags"> {inbranch%inbranchtag}{branches%branchtag}{tags%tagtag}{bookmarks%bookmarktag}</span></a>
</div>
<div class="title_text">
<div class="log_link">
<a href="{url|urlescape}rev/{node|short}{sessionvars%urlparameter}">changeset</a><br/>
</div>
<i>{author|obfuscate} [{date|rfc822date}] rev {rev}</i><br/>
</div>
<div class="log_body">
{desc|strip|escape|websub|addbreaks|nonempty}
<br/>
<br/>
</div>