neon: fix libressl support.

Reported via https://www.reddit.com/r/voidlinux/comments/fsy5v5/davfs2_broken/

srcpkgs/neon/patches/libressl.patch

@@ -0,0 +1,22 @@
+--- src/ne_openssl.c.orig	2020-04-02 09:38:00.420981981 +0200
++++ src/ne_openssl.c	2020-04-02 09:38:33.876330855 +0200
+@@ -578,7 +578,7 @@ ne_ssl_context *ne_ssl_context_create(in
+         /* enable workarounds for buggy SSL server implementations */
+         SSL_CTX_set_options(ctx->ctx, SSL_OP_ALL);
+         SSL_CTX_set_verify(ctx->ctx, SSL_VERIFY_PEER, verify_callback);
+-#if OPENSSL_VERSION_NUMBER >= 0x10101000L
++#if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x10101000L
+         SSL_CTX_set_post_handshake_auth(ctx->ctx, 1);
+ #endif
+     } else if (mode == NE_SSL_CTX_SERVER) {
+--- src/ne_socket.c.orig	2020-04-02 09:39:23.413847326 +0200
++++ src/ne_socket.c	2020-04-02 09:45:41.358787728 +0200
+@@ -610,7 +610,7 @@ static int error_ossl(ne_socket *sock, i
+ /* OpenSSL I/O function implementations. */
+ static int readable_ossl(ne_socket *sock, int secs)
+ {
+-#if OPENSSL_VERSION_NUMBER < 0x10101000L
++#if defined(LIBRESSL_VERSION_NUMBER) || OPENSSL_VERSION_NUMBER < 0x10101000L
+     /* Sufficient for TLSv1.2 and earlier. */
+     if (SSL_pending(sock->ssl))
+ 	return 0;

srcpkgs/neon/template

@@ -1,7 +1,7 @@
 # Template file for 'neon'
 pkgname=neon
 version=0.31.0
-revision=1
+revision=2
 build_style=gnu-configure
 configure_args="--with-expat --with-ssl=openssl --enable-shared
  --with-ca-bundle=/etc/ssl/certs/ca-certificates.crt --disable-static"