ext4: remove unnecessary braces in fs/ext4/dir.c

Removes braces to follow the coding style.

Signed-off-by: Milan Djurovic <mdjurovic@zohomail.com>
Link: https://lore.kernel.org/r/20210316052953.67616-1-mdjurovic@zohomail.com


Signed-off-by: Theodore Ts'o <tytso@mit.edu>