Fixed root context swap in clone (was checking context[0], should have checked last element in context stack).
Fixed root context swap in clone (was checking context[0], should have checked last element in context stack).

evdevgit/mustache.php,zuluf/mustache.php,sophatvathana/mustache.php,thecocce/mustache.php,bobthecow/mustache.php,cgvarela/mustache.php,BrunoDeBarros/mustache.php,daffl/zfmustache,ericariyanto/mustache.php,irontec/mustache