Fix openssl deprecated warnings.

lib/net_mosq.c

@@ -87,7 +87,7 @@ int net__init(void)
 #endif
 
 #ifdef WITH_TLS
-#  if OPENSSL_VERSION_NUMBER < 0x10100000L || OPENSSL_API_COMPAT < 0x10100000L
+#  if OPENSSL_VERSION_NUMBER < 0x10100000L
 	SSL_load_error_strings();
 	SSL_library_init();
 	OpenSSL_add_all_algorithms();
@@ -102,10 +102,10 @@ int net__init(void)
 void net__cleanup(void)
 {
 #ifdef WITH_TLS
-#  if OPENSSL_VERSION_NUMBER < 0x10100000L || OPENSSL_API_COMPAT < 0x10100000L
+#  if OPENSSL_VERSION_NUMBER < 0x10100000L
 	CRYPTO_cleanup_all_ex_data();
 	ERR_free_strings();
-	ERR_remove_state(0);
+	ERR_remove_thread_state(NULL);
 	EVP_cleanup();
 
 #    if !defined(OPENSSL_NO_ENGINE)