add -F to mke2fs so it actually formats our filesystem image

debian/changelog

@@ -1,3 +1,9 @@
+livecd-rootfs (1.140) UNRELEASED; urgency=low
+
+  * tell mke2fs that we _really_ want a filesystem on this "non-blockdevice"
+
+ -- Oliver Grawert <ogra@ubuntu.com>  Thu, 22 Jul 2010 09:08:14 +0200
+
 livecd-rootfs (1.139) maverick; urgency=low
 
   [ Steve Langasek ]

livecd.sh

@@ -87,7 +87,7 @@ livefs_ext2()
 
   # create an empty ext2 image and loop mount it
   dd if=/dev/zero of=livecd.${FSS}.ext2 bs=1024 count=0 seek=$size
-  mke2fs livecd.${FSS}.ext2
+  mke2fs -F livecd.${FSS}.ext2
   mount -o loop=${DEV} livecd.${FSS}.ext2 ${MOUNTPOINT}
 
   # copy chroot content to image