Fix memory leak when releasing connection & domain
Fix memory leak when releasing connection & domain

Signed-off-by: Lyre <liyong@skybility.com>

y Pleasek when releasing connection & domain enter the commit message for your changes. Lines starting

zippy2/libvirt-php,KnightSwarm/libvirt-php,php/pecl-virtualization-libvirt,vtolstov/libvirt-php,php/pecl-virtualization-libvirt,tucksaun/libvirt-php,php/pecl-virtualization-libvirt,tucksaun/libvirt-php,tucksaun/libvirt-php,vtolstov/libvirt-php,vtolstov/libvirt-php,libvirt/libvirt-php,php/pecl-virtualization-libvirt,vtolstov/libvirt-php,martijnotto/libvirt-php,martijnotto/libvirt-php,martijnotto/libvirt-php,libvirt/libvirt-php,KnightSwarm/libvirt-php,tucksaun/libvirt-php,KnightSwarm/libvirt-php,zippy2/libvirt-php,zippy2/libvirt-php,libvirt/libvirt-php,KnightSwarm/libvirt-php,KnightSwarm/libvirt-php,martijnotto/libvirt-php