fsnotify: Fix comment typo

[ Upstream commit feee1ce4 ]

The double `if' is duplicated in line 104, remove one.

Signed-off-by: Xin Gao <gaoxin@cdjrlc.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220722194639.18545-1-gaoxin@cdjrlc.com


Signed-off-by: Chuck Lever <chuck.lever@oracle.com>