Don't keep a pointer on freed memory after the module is detached.

diff --git a/src/modules/rlm_sql_log/rlm_sql_log.c b/src/modules/rlm_sql_log/rlm_sql_log.c
index 7068c26..8ac6572 100644 (file)
--- a/src/modules/rlm_sql_log/rlm_sql_log.c
+++ b/src/modules/rlm_sql_log/rlm_sql_log.c
@@ -161,6 +161,7 @@ static int sql_log_detach(void *instance)
                free(*p);
                *p = NULL;
        }
+       allowed_chars = NULL;
        free(inst);
        return 0;
 }