Set errno on OOM in lxcProcReadMeminfo
Set errno on OOM in lxcProcReadMeminfo

It sets the errno on all other errors, do it here too.
Also report an error.

jfehlig/libvirt,taget/libvirt,rlaager/libvirt,fabianfreyer/libvirt,shugaoye/libvirt,fabianfreyer/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,jardasgit/libvirt,eskultety/libvirt,taget/libvirt,zippy2/libvirt,andreabolognani/libvirt,agx/libvirt,eskultety/libvirt,VenkatDatta/libvirt,agx/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,libvirt/libvirt,elmarco/libvirt,taget/libvirt,olafhering/libvirt,andreabolognani/libvirt,libvirt/libvirt,crobinso/libvirt,elmarco/libvirt,andreabolognani/libvirt,rlaager/libvirt,jfehlig/libvirt,taget/libvirt,jfehlig/libvirt,agx/libvirt,elmarco/libvirt,zippy2/libvirt,nertpinx/libvirt,shugaoye/libvirt,zippy2/libvirt,eskultety/libvirt,nertpinx/libvirt,eskultety/libvirt,datto/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,agx/libvirt,zippy2/libvirt,olafhering/libvirt,shugaoye/libvirt,agx/libvirt,fabianfreyer/libvirt,rlaager/libvirt,VenkatDatta/libvirt,VenkatDatta/libvirt,shugaoye/libvirt,jardasgit/libvirt,rlaager/libvirt,datto/libvirt,VenkatDatta/libvirt,elmarco/libvirt,taget/libvirt,jardasgit/libvirt,olafhering/libvirt,olafhering/libvirt,jfehlig/libvirt,libvirt/libvirt,datto/libvirt,datto/libvirt,elmarco/libvirt,shugaoye/libvirt,datto/libvirt,nertpinx/libvirt,libvirt/libvirt,nertpinx/libvirt,andreabolognani/libvirt,rlaager/libvirt,andreabolognani/libvirt,crobinso/libvirt,crobinso/libvirt,crobinso/libvirt,eskultety/libvirt