[PATCH] qcow2: fix memory leak in qcow2_read_extensions

[luzhipeng]

From: lu zhipeng <luzhipeng@cestc.cn>

Free feature_table if it is failed in bdrv_pread.

Signed-off-by: lu zhipeng <luzhipeng@cestc.cn>
---
 block/qcow2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/block/qcow2.c b/block/qcow2.c
index c6c6692fb7..c8fc3a6160 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -275,6 +275,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, 
uint64_t start_offset,
                 if (ret < 0) {
                     error_setg_errno(errp, -ret, "ERROR: ext_feature_table: "
                                      "Could not read table");
+                    g_free(feature_table);
                     return ret;
                 }
 
-- 
2.31.1