Unconditionally set OpenSSL option SSL_OP_IGNORE_UNEXPECTED_EOF

This is needed to avoid an error when server doesn't close correctly, e.g.:

curl: (56) OpenSSL SSL_read: error:0A000126:SSL routines::unexpected eof while reading, errno 0

Resolves: RHEL-39995

0037-curl-7.76.1-ignore-unexpected-eof.patch

@@ -0,0 +1,14 @@
+diff -up curl-7.76.1/lib/vtls/openssl.c.ignore_unexpected_eof curl-7.76.1/lib/vtls/openssl.c
+--- curl-7.76.1/lib/vtls/openssl.c.ignore_unexpected_eof	2024-06-17 07:03:17.428620354 +0200
++++ curl-7.76.1/lib/vtls/openssl.c	2024-06-17 07:03:54.125799894 +0200
+@@ -2761,6 +2761,10 @@ static CURLcode ossl_connect_step1(struc
+       return CURLE_SSL_CONNECT_ERROR;
+   }
+ 
++#ifdef SSL_OP_IGNORE_UNEXPECTED_EOF
++  ctx_options |= SSL_OP_IGNORE_UNEXPECTED_EOF;
++#endif
++
+   SSL_CTX_set_options(backend->ctx, ctx_options);
+ 
+ #ifdef HAS_NPN

curl.spec

@@ -1,7 +1,7 @@
 Summary: A utility for getting files from remote servers (FTP, HTTP, and others)
 Name: curl
 Version: 7.76.1
-Release: 29%{?dist}
+Release: 30%{?dist}
 License: MIT
 Source: https://curl.se/download/%{name}-%{version}.tar.xz
 
@@ -110,6 +110,9 @@ Patch35:  0035-curl-7.76.1-64K-sftp.patch
 # lowercase the domain names before PSL checks (CVE-2023-46218)
 Patch36:  0036-curl-7.76.1-CVE-2023-46218.patch
 
+# ignore unexpected EOF (RHEL-39995)
+Patch37:  0037-curl-7.76.1-ignore-unexpected-eof.patch
+
 # patch making libcurl multilib ready
 Patch101: 0101-curl-7.32.0-multilib.patch
 
@@ -320,6 +323,7 @@ be installed.
 %patch34 -p1
 %patch35 -p1
 %patch36 -p1
+%patch37 -p1
 
 # Fedora patches
 %patch101 -p1
@@ -578,6 +582,9 @@ rm -f ${RPM_BUILD_ROOT}%{_libdir}/libcurl.la
 %{_libdir}/libcurl.so.4.[0-9].[0-9].minimal
 
 %changelog
+* Tue Jun 18 2024 Jacek Migacz <jmigacz@redhat.com> - 7.76.1-30
+- ignore unexpected EOF (RHEL-39995)
+
 * Wed Mar 6 2024 Jacek Migacz <jmigacz@redhat.com> - 7.76.1-29
 - rebuild for 9.4 GA