PHPC-2540: Use const for mongoc_host_list_t

Author: alcaeus

src/MongoDB/Server.c

@@ -619,9 +619,9 @@ void phongo_server_init(zval* return_value, zval* manager, uint32_t server_id)
 
 bool php_phongo_server_to_zval(zval* retval, mongoc_client_t* client, mongoc_server_description_t* sd)
 {
-	mongoc_host_list_t* host           = mongoc_server_description_host(sd);
-	const bson_t*       hello_response = mongoc_server_description_hello_response(sd);
-	bson_iter_t         iter;
+	const mongoc_host_list_t* host           = mongoc_server_description_host(sd);
+	const bson_t*             hello_response = mongoc_server_description_hello_response(sd);
+	bson_iter_t               iter;
 
 	array_init(retval);
 

src/MongoDB/ServerDescription.c

@@ -194,8 +194,8 @@ HashTable* php_phongo_serverdescription_get_properties_hash(zend_object* object,
 	}
 
 	{
-		zval                host, port, type;
-		mongoc_host_list_t* host_list = mongoc_server_description_host(intern->server_description);
+		zval                      host, port, type;
+		const mongoc_host_list_t* host_list = mongoc_server_description_host(intern->server_description);
 
 		ZVAL_STRING(&host, host_list->host);
 		zend_hash_str_update(props, "host", sizeof("host") - 1, &host);