From: Viktor Szakats <commit@vsz.me>
Date: Sun, 11 Aug 2024 19:43:46 +0000 (+0200)
Subject: sha256: fix symbol collision between nettle (GnuTLS) and OpenSSL codepath
X-Git-Tag: curl-8_10_0~282
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=28c12bc9be22727a2ad45de27ecbc76994a043f4;p=thirdparty%2Fcurl.git

sha256: fix symbol collision between nettle (GnuTLS) and OpenSSL codepath

Fixes:
```
C:\vcpkg\installed\x64-windows\include\nettle\sha2.h(75,8): error C2011: 'sha256_ctx': 'struct' type redefinition
```
Ref: https://github.com/curl/curl/actions/runs/10341162641/job/28622681573?pr=14484#step:10:30

Cherry-picked from #14495
Closes #14515
---

diff --git a/lib/sha256.c b/lib/sha256.c
index 6ff66f7418..04bc432ffa 100644
--- a/lib/sha256.c
+++ b/lib/sha256.c
@@ -100,10 +100,10 @@
 
 #if defined(USE_OPENSSL_SHA256)
 
-struct sha256_ctx {
+struct ossl_sha256_ctx {
   EVP_MD_CTX *openssl_ctx;
 };
-typedef struct sha256_ctx my_sha256_ctx;
+typedef struct ossl_sha256_ctx my_sha256_ctx;
 
 static CURLcode my_sha256_init(my_sha256_ctx *ctx)
 {