[Qemu-block] [PATCH 1/2] virtio-blk: Remove useless condition around g_free()

[Fam Zheng]

Laszlo spotted and studied this wasteful "if". He pointed out:

The original virtio_blk_free_request needed an "if" as it accesses one
field, since 671ec3f05655 ("virtio-blk: Convert VirtIOBlockReq.elem to
pointer", 2014-06-11); later on in f897bf751fbd ("virtio-blk: embed
VirtQueueElement in VirtIOBlockReq", 2014-07-09) the field became
embedded, so the "if" became unnecessary (at which point we were using
g_slice_free(), but it is the same.

Now drop it.

Reported-by: Laszlo Ersek <address@hidden>
Signed-off-by: Fam Zheng <address@hidden>
---
 hw/block/virtio-blk.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c
index 702eda8..2858c31 100644
--- a/hw/block/virtio-blk.c
+++ b/hw/block/virtio-blk.c
@@ -42,9 +42,7 @@ static void virtio_blk_init_request(VirtIOBlock *s, VirtQueue 
*vq,
 
 static void virtio_blk_free_request(VirtIOBlockReq *req)
 {
-    if (req) {
-        g_free(req);
-    }
+    g_free(req);
 }
 
 static void virtio_blk_req_complete(VirtIOBlockReq *req, unsigned char status)
-- 
2.9.3