/usr/lib/ubiquity/user-setup/user-setup-apply: ligne 165 : [: 5 : unary operator expected

Quantal Desktop 20121012.3

From syslog after an OEM installation
Oct 13 10:58:07 oem-VirtualBox ubiquity: stat:
Oct 13 10:58:07 oem-VirtualBox ubiquity: impossible d'évaluer «»
Oct 13 10:58:07 oem-VirtualBox ubiquity: : Aucun fichier ou dossier de ce type
Oct 13 10:58:07 oem-VirtualBox ubiquity:
Oct 13 10:58:07 oem-VirtualBox ubiquity: /usr/lib/ubiquity/user-setup/user-setup-apply: ligne 165 : [: 5 : opérateur unaire attendu
Oct 13 10:58:07 oem-VirtualBox ubiquity: INFO: Setting up swap: [/dev/sda1]

165: if [ $(stat -c %d "$ROOT/dev") -eq $(stat -c %d "$ROOT") ]; then

Should probably be
if [ $(stat -c %d "$ROOT/dev") -eq $(stat -c %d "$ROOT/") ]; then

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
ApportVersion: 2.6.1-0ubuntu3
Architecture: amd64
Date: Sat Oct 13 12:22:18 2012
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash -- apt-setup/restricted=false apt-setup/multiverse=false oem-config/enable=true
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121012.3)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)