[libgtop] Fixed glibtop_debug for calls without arguments.

[Benoît Dejean <bdejean src gnome org>]

commit 6bdb9a76ebb0c2481e9d9443884550d52493cdf7
Author: Benoit Dejean <bdejean gmail com>
Date:   Sun Jun 21 21:44:32 2015 +0200

    Fixed glibtop_debug for calls without arguments.

 include/glibtop/error.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/include/glibtop/error.h b/include/glibtop/error.h
index 6cc10a7..76e1abe 100644
--- a/include/glibtop/error.h
+++ b/include/glibtop/error.h
@@ -50,7 +50,7 @@ void glibtop_warn_io (const char *format, ...) G_GNUC_PRINTF(1, 2);
 #define glibtop_debug(fmt, ...)                                                \
        G_STMT_START {                                                  \
        if (LIBGTOP_ENABLE_DEBUG)                                       \
-               glibtop_debug_r(glibtop_global_server, fmt, __VA_ARGS__); \
+               glibtop_debug_r(glibtop_global_server, fmt, ##__VA_ARGS__); \
        } G_STMT_END
 
 void glibtop_debug_vr (glibtop *server, const char *format, va_list args);