net/libsrtp2: Fix build with libressl 3.5

Approved by:		tijl (maintainer), tcberner (mentor)
Differential Revision:	https://reviews.freebsd.org/D37050

net/libsrtp2/files/patch-crypto_hash_hmac__ossl.c

@@ -0,0 +1,20 @@
+--- crypto/hash/hmac_ossl.c.orig	2022-10-17 11:30:42 UTC
++++ crypto/hash/hmac_ossl.c
+@@ -80,7 +80,7 @@ static srtp_err_status_t srtp_hmac_alloc(srtp_auth_t *
+
+ /* OpenSSL 1.1.0 made HMAC_CTX an opaque structure, which must be allocated
+    using HMAC_CTX_new.  But this function doesn't exist in OpenSSL 1.0.x. */
+-#if OPENSSL_VERSION_NUMBER < 0x10100000L || LIBRESSL_VERSION_NUMBER
++#if OPENSSL_VERSION_NUMBER < 0x10100000L
+     {
+         /* allocate memory for auth and HMAC_CTX structures */
+         uint8_t *pointer;
+@@ -126,7 +126,7 @@ static srtp_err_status_t srtp_hmac_dealloc(srtp_auth_t
+
+     hmac_ctx = (HMAC_CTX *)a->state;
+
+-#if OPENSSL_VERSION_NUMBER < 0x10100000L || LIBRESSL_VERSION_NUMBER
++#if OPENSSL_VERSION_NUMBER < 0x10100000L
+     HMAC_CTX_cleanup(hmac_ctx);
+
+     /* zeroize entire state*/