db plugins: free memory at exit.

This patches frees an allocated buffer when ulogd is quitting.

1 files changed, 7 insertions, 0 deletions

diff --git a/util/db.c b/util/db.c
index 7ab609d..fee91b2 100644
--- a/util/db.c
+++ b/util/db.c
@@ -193,6 +193,13 @@ int ulogd_db_stop(struct ulogd_pluginstance *upi)
 		free(upi->input.keys);
 		upi->input.keys = NULL;
 	}
+
+	/* try to free the buffer for insert statement */
+	if (di->stmt) {
+		free(di->stmt);
+		di->stmt = NULL;
+	}
+
 	return 0;
 }