[glib] Add missing autoconf test for sysctlbyname()

[Matthias Clasen <matthiasc src gnome org>]

commit 79fab3e647b77f948d2e946d630dedec9ce19f5f
Author: Daniel Macks <dmacks netspace org>
Date:   Sat Dec 1 14:23:01 2012 -0500

    Add missing autoconf test for sysctlbyname()
    
    uses specific mib[] tokens iff it is available, but configure wasn't
    testing for it to be available.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=689324

 configure.ac |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index d5b5376..0304dad 100644
--- a/configure.ac
+++ b/configure.ac
@@ -901,6 +901,7 @@ AC_CHECK_HEADERS([sys/mount.h sys/sysctl.h], [], [],
  #include <sys/param.h>
  #endif
 ])
+AC_CHECK_FUNCS(sysctlbyname)
 
 AC_CHECK_HEADERS([xlocale.h])