From a753ce40c0076cd8bcded2a1a305c8d680626d4c Mon Sep 17 00:00:00 2001
From: dlzht <78463157+dlzht@users.noreply.github.com>
Date: Tue, 3 Dec 2024 21:51:21 +0800
Subject: [PATCH] fix: capacity handling in HeaderMap::try_with_capacity (#710)

Closes #353
---
 src/header/map.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/header/map.rs b/src/header/map.rs
index 7610175b..07b4554a 100644
--- a/src/header/map.rs
+++ b/src/header/map.rs
@@ -521,7 +521,7 @@ impl<T> HeaderMap<T> {
             Ok(HeaderMap {
                 mask: (raw_cap - 1) as Size,
                 indices: vec![Pos::none(); raw_cap].into_boxed_slice(),
-                entries: Vec::with_capacity(raw_cap),
+                entries: Vec::with_capacity(usable_capacity(raw_cap)),
                 extra_values: Vec::new(),
                 danger: Danger::Green,
             })