From 68a2c7b8d6ebd4a968c55b8a75f6ae3352416940 Mon Sep 17 00:00:00 2001
From: Jiaming Yuan <jm.yuan@outlook.com>
Date: Thu, 9 Sep 2021 13:51:03 +0800
Subject: [PATCH] Fix memory leak in demo. (#7216)

---
 demo/c-api/external-memory/external_memory.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/demo/c-api/external-memory/external_memory.c b/demo/c-api/external-memory/external_memory.c
index acafb51f8237..2718e8b6990e 100644
--- a/demo/c-api/external-memory/external_memory.c
+++ b/demo/c-api/external-memory/external_memory.c
@@ -98,6 +98,7 @@ void DataIterator_Free(DataIter *self) {
   }
   free(self->data);
   free(self->lengths);
+  free(self->labels);
   safe_xgboost(XGDMatrixFree(self->_proxy));
 };