[gnome-panel] Fix autoconf

[Jeremy Bicha <jbicha src gnome org>]

commit f738cf54f5cbd0483f75fb9ee396967411f1a426
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Mon May 20 10:14:05 2013 -0400

    Fix autoconf
    
    Thanks Balló György for the patch

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 60e94aa..710550a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 AC_INIT([gnome-panel], [3.7.0],
         [http://bugzilla.gnome.org/enter_bug.cgi?product=gnome-panel])
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS(config.h)
 AM_INIT_AUTOMAKE([1.11 no-dist-gzip dist-xz tar-ustar -Wno-portability])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])