[libgtop/wip/libgtop-ng] Fixed automake warning

[Robert Roth <robertroth src gnome org>]

commit 43f19912e3487d9369f48d9353789fcb8ca28399
Author: Robert Roth <robert roth off gmail com>
Date:   Thu Aug 22 01:34:34 2013 +0300

    Fixed automake warning

 libgtop-sysdeps.m4 |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/libgtop-sysdeps.m4 b/libgtop-sysdeps.m4
index 161e1a6..85d434d 100644
--- a/libgtop-sysdeps.m4
+++ b/libgtop-sysdeps.m4
@@ -240,7 +240,7 @@ AC_DEFUN([GNOME_LIBGTOP_SYSDEPS],[
          AC_CACHE_VAL(msginfo_needs,
            msginfo_needs=
            for def in nothing KERNEL _KERNEL; do
-             AC_COMPILE_IFELSE([#define $def
+             AC_COMPILE_IFELSE([AC_LANG_SOURCE([#define $def
 #include <sys/types.h>
 #include <sys/ipc.h>
 #include <sys/msg.h>
@@ -252,7 +252,7 @@ main (void)
   struct msginfo mi;
   mi.msgmax = 0;
   return 0;
-}],
+}])],
                [
                  msginfo_needs=$def
                  if test ${msginfo_needs} = KERNEL; then