chdir: Fix mistake in GNULIB_POSIXCHECK

[Bruno Haible]

This patch fixes a small copy&paste mistake.


2024-07-29  Bruno Haible  <br...@clisp.org>

        chdir: Fix mistake in GNULIB_POSIXCHECK.
        * lib/unistd.in.h: Don't attach the chdir warning to the 'chown'
        function.

diff --git a/lib/unistd.in.h b/lib/unistd.in.h
index 9ca377c4df..ae92587b6d 100644
--- a/lib/unistd.in.h
+++ b/lib/unistd.in.h
@@ -340,7 +340,7 @@ _GL_CXXALIASWARN (chdir);
 #elif defined GNULIB_POSIXCHECK
 # undef chdir
 # if HAVE_RAW_DECL_CHDIR
-_GL_WARN_ON_USE (chown, "chdir is not always in <unistd.h> - "
+_GL_WARN_ON_USE (chdir, "chdir is not always in <unistd.h> - "
                  "use gnulib module chdir for portability");
 # endif
 #elif @GNULIB_MDA_CHDIR@