Fix tests/xmlbuffer when PCI is enabled
Fix tests/xmlbuffer when PCI is enabled

We need to reenable IO when reloading from XML as well.

Looks like no regression/testing machine enables PCI.

git-svn-id: 14be032f8f42541b1a281b51ae8ea69814daf20e@4567 4b44e086-7f34-40ce-a3bd-00e031736276

BlueBrain/hwloc,BlueBrain/hwloc,BlueBrain/hwloc,BlueBrain/hwloc