message: Add include guards around DoNotRequireEofTest
  Guard DoNotRequireEofTest against -Wunused-function on platforms without file tests.
diff: @@ -1419,6 +1419,8 @@ void NativeInlineTableVectorTest() {
  TEST_ASSERT(unpacked.t == test.t);
  }
  +// Guard against -Wunused-function on platforms without file tests.
  +#ifndef FLATBUFFERS_NO_FILE_TESTS
  void DoNotRequireEofTest(const std::string &tests_data_path) {
  std::string schemafile;
  bool ok = flatbuffers::LoadFile(
  @@ -1460,6 +1462,7 @@ void DoNotRequireEofTest(const std::string &tests_data_path) {
  TEST_EQ_STR(monster->name()->c_str(), "Imp");
  TEST_EQ(monster->hp(), 10);
  }
  +#endif
  int FlatBufferTests(const std::string &tests_data_path) {
  // Run our various test suites:
  