Add missing usistd.h for system(3)

git-core · git-core · commit c6ef3cc4e6a3 · 2012-07-19T16:37:23.000+04:00
diff --git a/activity.c b/activity.c
@@ -16,6 +16,7 @@
 */
 
 #include <unistd.h>
+#include <stdlib.h>
 
 #include "su.h"
 
