From f58ecac620826b5272eead9a9aaa7b895d6f6109 Mon Sep 17 00:00:00 2001
From: Martin Algesten <martin@algesten.se>
Date: Sun, 20 Oct 2019 11:19:16 +0200
Subject: [PATCH] Simpler comparison for retaining x- headers

---
 src/header.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/header.rs b/src/header.rs
index a2b2e08..056a4b8 100644
--- a/src/header.rs
+++ b/src/header.rs
@@ -75,8 +75,8 @@ pub fn has_header(headers: &[Header], name: &str) -> bool {
 }
 
 pub fn add_header(headers: &mut Vec<Header>, header: Header) {
-    if !header.name().to_lowercase().starts_with("x-") {
-        let name = header.name();
+    let name = header.name();
+    if !name.starts_with("x-") && !name.starts_with("X-") {
         headers.retain(|h| h.name() != name);
     }
     headers.push(header);