Fix for -Werror=nested-externs

--- origsrc/glib-2.34.3/m4macros/glib-gettext.m4	2012-11-20 08:27:12.000000000 -0600
+++ src/glib-2.34.3/m4macros/glib-gettext.m4	2013-04-15 02:04:25.707401500 -0500
@@ -222,8 +222,8 @@ msgstr ""
 	  AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
 	  GLIB_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
 	    [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
-	  AC_TRY_LINK(, [extern int _nl_msg_cat_cntr;
-			 return _nl_msg_cat_cntr],
+	  AC_TRY_LINK([extern int _nl_msg_cat_cntr;],
+		      [return _nl_msg_cat_cntr],
 	    [CATOBJEXT=.gmo 
              DATADIRNAME=share],
 	    [case $host in