Fix build with opaque HMAC_CTX in LibreSSL 3.5.

Index: encfs/SSL_Compat.h
--- encfs/SSL_Compat.h.orig
+++ encfs/SSL_Compat.h
@@ -22,7 +22,7 @@
 #define _SSL_Compat_incl_
 
 // OpenSSL < 1.1.0 or LibreSSL
-#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
 
 // Equivalent methods
 #define EVP_MD_CTX_new EVP_MD_CTX_create