libraries/libvirt: (Really) properly initialize $count in rc.libvirt

This fixes commit e4dec7aaf7

Signed-off-by: Robby Workman <rworkman@slackbuilds.org>

libraries/libvirt/rc.libvirt

@@ -81,7 +81,7 @@ guests_managedsave() {
 
   echo -n "Waiting for managedsave to finish on all guests..."
 
-  count = 0
+  count=0
 
   while [ $(/usr/sbin/virsh list --name | grep -v ^$ | wc -l) -gt "0" ]; do
     if [ "$count" -ge "$TIMEOUT" ];then