Bug#634649: os-prober does not detect Windows if there is a /boot folder in the Windows partition

["yannubuntu@gmail.com" <yannubuntu@gmail.com>]

2nd patch does not work either:

patch and boot folder:
ubuntu@ubuntu:~$ LANG=C sudo os-prober
ls: cannot access : No such file or directory
ls: cannot access : No such file or directory
ls: cannot access : No such file or directory
/dev/sda5:Ubuntu 10.10 (10.10):Ubuntu:linux
/dev/sda6:Ubuntu 11.04 (11.04):Ubuntu1:linux
ls: cannot access : No such file or directory

no patch and boot folder:
ubuntu@ubuntu:~$ LANG=C sudo os-prober
ls: cannot access /media/Vista/Boot
boot: No such file or directory
/dev/sda5:Ubuntu 10.10 (10.10):Ubuntu:linux
/dev/sda6:Ubuntu 11.04 (11.04):Ubuntu1:linux

no patch and no boot folder:
ubuntu@ubuntu:~$ LANG=C sudo os-prober
/dev/sda1:Windows Vista (loader):Windows:chain
/dev/sda5:Ubuntu 10.10 (10.10):Ubuntu:linux
/dev/sda6:Ubuntu 11.04 (11.04):Ubuntu1:linux

patch and no boot folder:
ubuntu@ubuntu:~$ LANG=C sudo os-prober
ls: cannot access : No such file or directory
ls: cannot access : No such file or directory
ls: cannot access : No such file or directory
/dev/sda5:Ubuntu 10.10 (10.10):Ubuntu:linux
/dev/sda6:Ubuntu 11.04 (11.04):Ubuntu1:linux
ls: cannot access : No such file or directory

all tests from live-usb