action: add <stdlib>

For exit() and EXIT_*

diff --git a/action.cc b/action.cc
index 2750edf13b685e728c946d093e8352c70bfc8151..0084fd3411cdb57e888b1dcef161eb16a6d1398d 100644 (file)
--- a/action.cc
+++ b/action.cc
@@ -1,6 +1,7 @@
 #include <stdio.h>
 #define __STDC_FORMAT_MACROS
 #include <inttypes.h>
+#include <stdlib.h>
 
 #include "model.h"
 #include "action.h"