[PATCH] block: Free iovec arrays allocated by multiwrite_merge()

[Stefan Hajnoczi <stefanha@xxxxxxxxxxxxxxxxxx>]

A new iovec array is allocated when creating a merged write request.
This patch ensures that the iovec array is deleted in addition to its
qiov owner.

Signed-off-by: Stefan Hajnoczi <stefanha@xxxxxxxxxxxxxxxxxx>
---
 block.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/block.c b/block.c
index e891544..2d31474 100644
--- a/block.c
+++ b/block.c
@@ -1731,6 +1731,9 @@ static void multiwrite_user_cb(MultiwriteCB *mcb)
 
     for (i = 0; i < mcb->num_callbacks; i++) {
         mcb->callbacks[i].cb(mcb->callbacks[i].opaque, mcb->error);
+        if (mcb->callbacks[i].free_qiov) {
+            qemu_iovec_destroy(mcb->callbacks[i].free_qiov);
+        }
         qemu_free(mcb->callbacks[i].free_qiov);
         qemu_vfree(mcb->callbacks[i].free_buf);
     }
-- 
1.7.0

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