message: Make error_message constant
diff: @@ -39,7 +39,7 @@ tensorflow::error::Code BuildRandomErrorCode(uint32_t code){
  extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  tensorflow::error::Code error_code;
  - std::string error_message = "ERROR";
  + const std::string error_message = "ERROR";
  tensorflow::Status s, derived_s;
  