Fix some mistakes spotted by wiz@.

share/man/man9/tmpfs.9

@@ -1,4 +1,4 @@
-.\"	$NetBSD: tmpfs.9,v 1.3 2005/09/10 21:48:21 wiz Exp $
+.\"	$NetBSD: tmpfs.9,v 1.4 2005/09/10 21:59:39 jmmv Exp $
 .\"
 .\" Copyright (c) 2005 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -174,8 +174,6 @@ removed when the file is explicitly removed.
 Also, given the volatile nature of
 .Nm ,
 the nodes are also released as part of the unmount process.
-.\" XXX: missing half sentence?
-to describe existing files (of any type) within the file system.
 .Pp
 This structure is split in two parts: one holds attributes common
 to all file types and the other holds data that is only applicable
@@ -457,8 +455,7 @@ Returns zero on success or an appropriate error code on failure.
 .It Ft void Fn tmpfs_free_dirent "struct tmpfs_mount *tmp" "struct tmpfs_dirent *de" "boolean_t node_exists"
 Frees a directory entry.
 It is the responsibility of the caller to destroy the node referenced
-.\" XXX: missing word after "by"
-by if needed.
+by this directory entry, if needed.
 .Pp
 The link count of
 .Va node
@@ -673,8 +670,7 @@ and the node it references.
 .Ss Memory pools
 .Nm
 uses memory pools (see
-.\" XXX: Xr wrong -- points to itself
-.Xr tmpfs 9 )
+.Xr pool 9 )
 to manage the memory associated with nodes and directory entries.
 .Pp
 Each mounted instance of