[PATCH] Fix return value in reiserfs allocator

Make reiserfs correctly return EDQUOT when the allocation failed due to
quotas (so far we just returned ENOSPC).

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>