add 'const'

diff --git a/src/modules/rlm_sql/drivers/rlm_sql_mysql/rlm_sql_mysql.c b/src/modules/rlm_sql/drivers/rlm_sql_mysql/rlm_sql_mysql.c
index 2a794554fb2a45fe5629e067e18c25cb55f26699..73d2538f17ecaededeb715cdb5da1ef77c90b563 100644 (file)
--- a/src/modules/rlm_sql/drivers/rlm_sql_mysql/rlm_sql_mysql.c
+++ b/src/modules/rlm_sql/drivers/rlm_sql_mysql/rlm_sql_mysql.c
@@ -154,7 +154,7 @@ static const CONF_PARSER driver_config[] = {
 };
 
 /* Prototypes */
-static sql_rcode_t sql_free_result(rlm_sql_handle_t*, rlm_sql_config_t*);
+static sql_rcode_t sql_free_result(rlm_sql_handle_t*, rlm_sql_config_t const *);
 
 static int _sql_socket_destructor(rlm_sql_mysql_conn_t *conn)
 {