autofs: should_expire() argument is guaranteed to be positive

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/autofs/expire.c

@@ -355,7 +355,7 @@ static struct dentry *should_expire(struct dentry *dentry,
 		return NULL;
 	}
 
-	if (d_really_is_positive(dentry) && d_is_symlink(dentry)) {
+	if (d_is_symlink(dentry)) {
 		pr_debug("checking symlink %p %pd\n", dentry, dentry);
 
 		/* Forced expire, user space handles busy mounts */