smb: client: Fix minor whitespace errors and warnings

[ Upstream commit 0108ce08 ]

Fixes no-op checkpatch errors and warnings.

Signed-off-by: Pierre Mariani <pierre.mariani@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>