nixos-container: check for correct path for chattr

Could fail on destroy if the container wasn't created correctly

Changed files
+1 -1
pkgs
tools
virtualization
nixos-container
+1 -1
pkgs/tools/virtualization/nixos-container/nixos-container.pl
···
safeRemoveTree($profileDir) if -e $profileDir;
safeRemoveTree($gcRootsDir) if -e $gcRootsDir;
-
system("chattr", "-i", "$root/var/empty") if -e $root;
safeRemoveTree($root) if -e $root;
unlink($confFile) or die;
}
···
safeRemoveTree($profileDir) if -e $profileDir;
safeRemoveTree($gcRootsDir) if -e $gcRootsDir;
+
system("chattr", "-i", "$root/var/empty") if -e "$root/var/empty";
safeRemoveTree($root) if -e $root;
unlink($confFile) or die;
}