[ekiga] Fix compile error

[Eugen Dedu <ededu src gnome org>]

commit f8aa653ed9f94dbb8896d51d2e21197c2be0eb1a
Author: Eugen Dedu <Eugen Dedu pu-pm univ-fcomte fr>
Date:   Wed May 23 15:57:57 2012 +0200

    Fix compile error

 lib/gui/gmcallbacks.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/lib/gui/gmcallbacks.c b/lib/gui/gmcallbacks.c
index 19c2b5d..bfe8420 100644
--- a/lib/gui/gmcallbacks.c
+++ b/lib/gui/gmcallbacks.c
@@ -46,6 +46,7 @@
 
 #ifdef WIN32
 #include "platform/winpaths.h"
+#include <windows.h>
 #include <shellapi.h>
 #define WIN32_HELP_DIR "help"
 #define WIN32_HELP_FILE "index.html"