fn parse_hdr<'a>(
data: &'a [u8],
b: &'a mut [MaybeUninit<u8>; 64],
table: &[u8; 256],
) -> Result<HdrName<'a>, InvalidHeaderName>
fn parse_hdr<'a>(
data: &'a [u8],
b: &'a mut [MaybeUninit<u8>; 64],
table: &[u8; 256],
) -> Result<HdrName<'a>, InvalidHeaderName>