[gdm] Add missing quote around AC_CHECK_DECL macro

[Laurent Bigonville <lbigon src gnome org>]

commit b1a4aee7349877ff73f92a5413b6a8a431704a2b
Author: Laurent Bigonville <bigon bigon be>
Date:   Thu May 22 10:13:27 2014 +0200

    Add missing quote around AC_CHECK_DECL macro
    
    https://bugzilla.gnome.org/show_bug.cgi?id=730552

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 2b7a662..646432e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -356,11 +356,11 @@ AC_CHECK_FUNC(gethostbyname,,[
                           EXTRA_SLAVE_LIBS="$EXTRA_SLAVE_LIBS -lnsl"
                           EXTRA_CHOOSER_LIBS="$EXTRA_CHOOSER_LIBS -lnsl"
                           EXTRA_TEST_LIBS="$EXTRA_TEST_LIBS -lnsl"])])
-AC_CHECK_DECL(HOST_NAME_MAX, ,
+AC_CHECK_DECL(HOST_NAME_MAX,,[
              AC_CHECK_DECL(_POSIX_HOST_NAME_MAX,
                            AC_DEFINE(HOST_NAME_MAX, _POSIX_HOST_NAME_MAX, []),
                            AC_DEFINE(HOST_NAME_MAX, 256, [Define to 256 if neither have HOST_NAME_MAX nor 
_POSIX_HOST_NAME_MAX]),
-                           [[#include <limits.h>]]),
+                           [[#include <limits.h>]])],
              [[#include <limits.h>]])
 AC_CHECK_FUNC(sched_yield,[
              AC_DEFINE(HAVE_SCHED_YIELD, 1, [Define if we have sched yield])],[