Add necessary include

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4942 d4fa192b-c00b-0410-8231-f00ffab90ce4

lib/libvarnishapi/base64.c

@@ -9,6 +9,7 @@
 #include "svnid.h"
 SVNID("$Id$")
 
+#include <stdint.h>
 #include <sys/types.h>
 #include "varnishapi.h"