Track correctly the number of secure command channel connections

tests/sel_ldr/non_exit.c

 /*
  * Copyright 2012 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can
  * be found in the LICENSE file.
  */
 
+#include <stdlib.h>
+
+#include <time.h>
+#include <sys/time.h>
+#include <sys/nacl_syscalls.h>
+
 int main(int argc, char* argv[]) {
+  struct timespec t = {1, 0};
+  while (1) {
+    nanosleep(&t, 0);
+  }
   return 0;
 }