namei.c: fix BS comment

get_write_access() is needed for nfsd, not binfmt_aout (the latter
has no business doing anything of that kind, of course)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/namei.c b/fs/namei.c
index dd1ed1b..c5b85b3 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3971,7 +3971,7 @@
 EXPORT_SYMBOL(follow_down_one);
 EXPORT_SYMBOL(follow_down);
 EXPORT_SYMBOL(follow_up);
-EXPORT_SYMBOL(get_write_access); /* binfmt_aout */
+EXPORT_SYMBOL(get_write_access); /* nfsd */
 EXPORT_SYMBOL(getname);
 EXPORT_SYMBOL(lock_rename);
 EXPORT_SYMBOL(lookup_one_len);