[C++]: move example expressions around for clarity of example

Author: tmontgomery

sbe-samples/src/main/cpp/OtfExample.cpp

@@ -426,15 +426,17 @@ int main(int argc, char **argv)
  }
 
  std::shared_ptr<std::vector<Token>> headerTokens = irDecoder.header();
- std::shared_ptr<std::vector<Token>> messageTokens = irDecoder.message(Car::sbeTemplateId(), Car::sbeSchemaVersion());
 
  OtfHeaderDecoder headerDecoder(headerTokens);
 
  const char *messageBuffer = buffer + headerDecoder.encodedLength();
  std::uint64_t length = sz - headerDecoder.encodedLength();
+ std::uint64_t templateId = headerDecoder.getTemplateId(buffer);
  std::uint64_t actingVersion = headerDecoder.getSchemaVersion(buffer);
  std::uint64_t blockLength = headerDecoder.getBlockLength(buffer);
 
+ std::shared_ptr<std::vector<Token>> messageTokens = irDecoder.message(templateId, actingVersion);
+
  const std::size_t result =
  OtfMessageDecoder::decode(messageBuffer, length, actingVersion, blockLength, messageTokens, tokenListener);