* Fuzzer finds an NPE due to incorrect URLPrefix
The Fuzzer is running on a non-repo urlprefix which is incorrect for RenderRaw
* Make FindRenderizableReferenceNumeric and getReferences more efficient
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>