fsnotify: Fix comment typo

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

Signed-off-by: Xin Gao <[e-mail]>
Signed-off-by: Jan Kara <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

fs/notify/fsnotify.c

···
  * Given an inode, first check if we care what happens to our children.  Inotify
  * and dnotify both tell their parents about events.  If we care about any event
  * on a child we run all of our children and set a dentry flag saying that the
- * parent cares.  Thus when an event happens on a child it can quickly tell if
+ * parent cares.  Thus when an event happens on a child it can quickly tell
  * if there is a need to find a parent and send the event to the parent.
  */
 void __fsnotify_update_child_dentry_flags(struct inode *inode)