reserve the extra room in fstypes[]
reserve the extra room in fstypes[]

Preparation. Enlarge fstypes[] to make it possible to add the new
fstype's dynamically.

This means ths find_fstype_by_name() and decode_fstype() need the
additional ->name == NULL check to terminate the search.

Also change them to start with "i == 1", we rely on the fact that
fstypes[0] is FSTYPE__UNSUPPORTED anyway.

Signed-off-by: Oleg Nesterov <20b70f0af00562e63758b9ee42012ecc96c58590@redhat.com>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>

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