cifs: minor cleanup of some headers

[ Upstream commit c19204cb

 ]

checkpatch showed formatting problems with extra spaces,
and extra semicolon and some missing blank lines in some
cifs headers.

Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Germano Percossi <germano.percossi@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Stable-dep-of: de4eceab

 ("smb3: allow dumping session and tcon id to improve stats analysis and debugging")
Signed-off-by: Sasha Levin <sashal@kernel.org>