virfile: Fix virFileExists commentary
virfile: Fix virFileExists commentary

Arguably though, function returning only on success is a very
interesting, although quite impractical concept. Also, the errno isn't
and shouldn't be preserved in this case, since the errno can be directly
fed to the virReportSystemError.

Signed-off-by: Erik Skultety <2c14d38fa47c8799f1b9c16280abe27f8edfec6e@redhat.com>

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