win32: pair qemu_memalign() with qemu_vfree()

Win32 suffers from a very big memory leak when dealing with SCSI devices.
Each read/write request allocates memory with qemu_memalign (ie
VirtualAlloc) but frees it with qemu_free (ie free).
Pair all qemu_memalign() calls with qemu_vfree() to prevent such leaks.

Signed-off-by: Herve Poussineau <hpoussin@reactos.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
(cherry picked from commit f8a83245d9ec685bc6aa6173d6765fe03e20688f)

1 files changed, 1 insertions, 1 deletions

diff --git a/block.c b/block.c
index 3f3496ec90..a3163a723e 100644
--- a/block.c
+++ b/block.c
@@ -1607,7 +1607,7 @@ 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);
         qemu_free(mcb->callbacks[i].free_qiov);
-        qemu_free(mcb->callbacks[i].free_buf);
+        qemu_vfree(mcb->callbacks[i].free_buf);
     }
 }