The code that fixes up AUFS pathnames associated with vma entries (see
commit d8b41b65) should handle cases where an entry does not expose
the branch pathname (e.g., pointing to a device like /dev/zero).
Signed-off-by: Saied Kazemi <saied@google.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>