virDomainNetDefParseXML: Fix typo
virDomainNetDefParseXML: Fix typo

In 9cb891141c we've introduced some logic to clearing suggested
macvtap/macvlan ifnames. The logic consists of comparing ifname
string with strings that libvirt would generate. However, due to
a typo only VIR_NET_GENERATED_MACVTAP_PREFIX was compared. Twice.

Signed-off-by: Michal Privoznik <83d82aaba2eed257f4814b0c239c260c4caaadf0@redhat.com>

zippy2/libvirt,datto/libvirt,fabianfreyer/libvirt,zippy2/libvirt,VenkatDatta/libvirt,olafhering/libvirt,zippy2/libvirt,jardasgit/libvirt,jardasgit/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,eskultety/libvirt,eskultety/libvirt,crobinso/libvirt,nertpinx/libvirt,nertpinx/libvirt,nertpinx/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,crobinso/libvirt,nertpinx/libvirt,nertpinx/libvirt,datto/libvirt,fabianfreyer/libvirt,olafhering/libvirt,datto/libvirt,VenkatDatta/libvirt,olafhering/libvirt,libvirt/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,libvirt/libvirt,crobinso/libvirt,datto/libvirt,andreabolognani/libvirt,zippy2/libvirt,libvirt/libvirt,jfehlig/libvirt,datto/libvirt,eskultety/libvirt,crobinso/libvirt,jardasgit/libvirt,eskultety/libvirt,andreabolognani/libvirt,jfehlig/libvirt,eskultety/libvirt,libvirt/libvirt,olafhering/libvirt,jfehlig/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt