qemu_monitor: rephrase error message if qemu closes monitor
qemu_monitor: rephrase error message if qemu closes monitor

Signed-off-by: Pavel Hrdina <d4772d05997b8abf035041e3b4f4996380ea7e7a@redhat.com>

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