image_to_vm.sh: Remove nonexistent flag.

'FLAGS_mem' does not exist anymore. Remove it and replace it with
'DEFAULT_MEM'.

BUG=None
TEST=Run 'image_to_vm.sh', check that it prints a valid kvm cmdline.

Change-Id: Ica01f4561e31b9764c9dc3e7f1d00afb2eeef7c3
Reviewed-on: https://chromium-review.googlesource.com/320499
Commit-Ready: Jorge Lucangeli Obes <jorgelo@chromium.org>
Tested-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
diff --git a/image_to_vm.sh b/image_to_vm.sh
index 71acec9..8b6a9f4 100755
--- a/image_to_vm.sh
+++ b/image_to_vm.sh
@@ -210,7 +210,7 @@
 echo "Created image at ${FLAGS_to}"
 
 echo "If you have qemu-kvm installed, you can start the image by:"
-echo "sudo kvm -m ${FLAGS_mem} -vga cirrus -pidfile /tmp/kvm.pid" \
+echo "sudo kvm -m ${DEFAULT_MEM} -vga cirrus -pidfile /tmp/kvm.pid" \
   "-net nic,model=virtio -net user,hostfwd=tcp::9222-:22 \\"
 echo "-hda ${FLAGS_to}/${DEFAULT_QEMU_IMAGE}"