Fix memory leak in demo. (dmlc#7216)

trivialfis · web-flow · commit 68a2c7b8d6eb · 2021-09-09T13:51:03.000+08:00
diff --git 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));
 };
 

Original file line number	Diff line number	Diff line change
`@@ -98,6 +98,7 @@ void DataIterator_Free(DataIter *self) {`
`98`	`98`	`}`
`99`	`99`	`free(self->data);`
`100`	`100`	`free(self->lengths);`
	`101`	`+ free(self->labels);`
`101`	`102`	`safe_xgboost(XGDMatrixFree(self->_proxy));`
`102`	`103`	`};`
`103`	`104`