MINOR: qpack: add ABORT_NOW on unimplemented decoding

Post-base indices is not supported at the moment for decoding. This
should never be encountered as it is only used with a dynamic table.
However, haproxy deactivates support for the dynamic table via its
SETTINGS.

Use ABORT_NOW() if this situation happens anyway. This should help
debugging instead of silently failed without error reporting.
1 file changed