staging: exfat: alignment should match open parenthesis

Align code to match open parenthesis.
Signed-off-by: Payal Kshirsagar <payalskshirsagar1234@gmail.com>
Link: https://lore.kernel.org/r/20200309165138.5313-1-payalskshirsagar1234@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>