From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 8 Aug 2022 11:21:01 +0000 (+0200)
Subject: urldata: make 'negnpn' use less storage
X-Git-Tag: curl-7_85_0~94
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a29d34b0b7fd9d5b31f0ac10e4f7ee5b32f3e09a;p=thirdparty%2Fcurl.git

urldata: make 'negnpn' use less storage

The connectdata struct field 'negnpn' never holds a value larger than
30, so an unsigned char saves 3 bytes struct space.

Closes #9279
---

diff --git a/lib/urldata.h b/lib/urldata.h
index 4f648778b0..0c252d12af 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -1119,7 +1119,8 @@ struct connectdata {
   int localportrange;
   int cselect_bits; /* bitmask of socket events */
   int waitfor;      /* current READ/WRITE bits to wait for */
-  int negnpn; /* APLN or NPN TLS negotiated protocol, CURL_HTTP_VERSION* */
+  unsigned char negnpn; /* APLN or NPN TLS negotiated protocol,
+                           a CURL_HTTP_VERSION* value */
 
 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
   int socks5_gssapi_enctype;