message: fix c99 mode
diff: @@ -10,7 +10,8 @@ int int_cmp(const void* a, const void* b) {
  void* res = bsearch((const void*) &key, (void*) arr, len, sizeof(int), int_cmp); \
  if (res != expect) { \
  printf("FAIL bsearch for %d in [", key); \
  - for (size_t i = 0; i < len; ++i) printf("%d,", arr[i]); \
  + size_t i = 0; \
  + for (; i < len; ++i) printf("%d,", arr[i]); \
  printf("] expected %p but got %p\n", (void*) expect, res); \
  return 1; \
  } \
  