$plugin->parse_volname($tmpvolname);
};
- if ($basename && $basevmid && $basevmid == $vmid && $basename eq $name) {
+ if ($basename && defined($basevmid) && $basevmid == $vmid && $basename eq $name) {
die "base volume '$volname' is still in use " .
"(use by '$tmpvolname')\n";
}