- Move the seeking inside of DetectFeedFormat instead of having it everywhere
in ParseFeed
- Provide a hint for the compiler to eliminate a useless bound check in
DetectJSONFormat, otherwise it'll check that buffer[i] is valid on every
iteration of the loop. This shouldn't make a big difference, but oh well.
There is no need to allocate half a kilobyte of memory only check that a buffer
starts with a bunch of spaces and a `{`, 32b should be more than enough. Also,
no need to allocate it on the heap, having it on the stack works perfectly.
There is no need to detect the format and then the version when both can be
done at the same time.
Add a benchmark as well, on large and small atom and rss files.
