message: test(runtime-c-api) Remove a hardcoded value.
diff: @@ -64,7 +64,7 @@ int main()
  assert(call_result == WASMER_ERROR);
  int error_len = wasmer_last_error_length();
  - printf("Error len: `%d`\n", 20);
  + printf("Error len: `%d`\n", error_len);
  char *error_str = malloc(error_len);
  wasmer_last_error_message(error_str, error_len);
  printf("Error str: `%s`\n", error_str);
  