Function parse_in_reply_to_from_collected 

pub fn parse_in_reply_to_from_collected(
    attrs: &[(Vec<u8>, String)],
    max_attr_len: usize,
) -> Option<InReplyTo>

Parse thr:in-reply-to from collected attributes (RSS 2.0 parser path)

Returns None only if ALL fields are None after normalization.

Arguments

• attrs - Slice of collected (key_bytes, value_string) attribute pairs
• max_attr_len - Maximum attribute value length for DoS protection