For version 4.4.3 gold: It is
Replace
<a href="{$l.1|amp}" class="bread-crumb{if $smarty.foreach.location.last} last-bread-crumb{/if}">{if $webmaster_mode eq "editor"}{$l.0}{else}{$l.0|amp}{/if}</a>
with
<a href="{if $smarty.foreach.location.first}http://put.link.here{else}{$l.1|amp}{/if}" class="bread-crumb{if $smarty.foreach.location.last} last-bread-crumb{/if}">{if $webmaster_mode eq "editor"}{$l.0}{else}{$l.0|amp}{/if}</a>
(..and thanks to Victor D for original post!)