Update sanity.c

Author: dreamer-coding

code/logic/sanity.c

@@ -13,6 +13,14 @@
  * -----------------------------------------------------------------------------
  */
 #include "fossil/pizza/sanity.h"
+#define _POSIX_C_SOURCE 200809L
+
+#include <stdlib.h>   // getenv, setenv
+#include <time.h>     // localtime_r, strftime
+#include <sys/time.h> // gettimeofday
+#include <signal.h>   // kill, SIGTERM
+#include <unistd.h>   // kill (sometimes needed explicitly)
+
 #ifdef _WIN32
 #include <windows.h>
 #else