there are only changes in spice-gtk, so we need to rebuild virt-viewer with new version of spice-gtk
VERIFIED this bug as related bugs were fixed and virt-viewer works well on RHEL6.4.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2013-0361.html