[PATCH] makediff: make it work for fresh checkout

>
From:  <> On Behalf Of
> Michael S. Tsirkin
>
> 1st time one checks out our repo, latexdiff submodule is not initialized. Pass --
> init to update command to initialize it. It seems to be harmless if already
> initialized.
>
> Signed-off-by: Michael S. Tsirkin <>

Tested-by: Parav Pandit <>