fts: fix compiler warning

[Eric Blake]

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I'm pushing this, detected during a cygwin build:

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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>From 5ac332ad735b4e4c7dd5a953af5f257ed492ff54 Mon Sep 17 00:00:00 2001
From: Eric Blake <address@hidden>
Date: Mon, 21 Sep 2009 10:11:18 -0600
Subject: [PATCH] fts: avoid compiler warning

* lib/fts.c (dirent_inode_sort_may_be_useful)
(leaf_optimization_applies) [!__linux__]: Mark unused parameters.

Signed-off-by: Eric Blake <address@hidden>
---
 ChangeLog |    6 ++++++
 lib/fts.c |    6 ++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index c609ae9..7c6f358 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-09-21  Eric Blake  <address@hidden>
+
+       fts: avoid compiler warning
+       * lib/fts.c (dirent_inode_sort_may_be_useful)
+       (leaf_optimization_applies) [!__linux__]: Mark unused parameters.
+
 2009-09-19  Bruno Haible  <address@hidden>

        * lib/progreloc.c (canonicalize_file_name): New declaration.
diff --git a/lib/fts.c b/lib/fts.c
index 2893e66..041f9f0 100644
--- a/lib/fts.c
+++ b/lib/fts.c
@@ -726,8 +726,10 @@ leaf_optimization_applies (int dir_fd)
 }

 #else
-static bool dirent_inode_sort_may_be_useful (int dir_fd) { return true; }
-static bool leaf_optimization_applies (int dir_fd) { return false; }
+static bool
+dirent_inode_sort_may_be_useful (int dir_fd ATTRIBUTE_UNUSED) { return true; }
+static bool
+leaf_optimization_applies (int dir_fd ATTRIBUTE_UNUSED) { return false; }
 #endif

 #if GNULIB_FTS
-- 
1.6.5.rc1