ext4: fix boolreturn.cocci warnings in fs/ext4/name.c

ext4: fix boolreturn.cocci warnings in fs/ext4/name.c

Return statements in functions returning bool should use true/false
instead of 1/0.

./fs/ext4/namei.c:1441:12-13:WARNING:return of 0/1 in function
'ext4_match' with return type bool

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Jing Yangyang <jing.yangyang@zte.com.cn>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20210824055543.58718-1-deng.changcheng@zte.com.cn
Signed-off-by: Theodore Ts'o <tytso@mit.edu>