[Qemu-block] [PATCH] qemu-img: Fix options leakage in img_rebase()

[Max Reitz]

img_rebase() can leak a QDict in two occasions.  Fix it.

Coverity: CID 1401416
Fixes: d16699b64671466b42079c45b89127aeea1ca565
Fixes: 330c72957196e0ae382abcaa97ebf4eb9bc8574f
Signed-off-by: Max Reitz <address@hidden>
---
 qemu-img.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/qemu-img.c b/qemu-img.c
index b0535919b1..86e1923acf 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -3347,6 +3347,7 @@ static int img_rebase(int argc, char **argv)
                                                              out_baseimg,
                                                              &local_err);
             if (local_err) {
+                qobject_unref(options);
                 error_reportf_err(local_err,
                                   "Could not resolve backing filename: ");
                 ret = -1;
@@ -3359,7 +3360,9 @@ static int img_rebase(int argc, char **argv)
              */
             prefix_chain_bs = bdrv_find_backing_image(bs, out_real_path);
             if (prefix_chain_bs) {
+                qobject_unref(options);
                 g_free(out_real_path);
+
                 blk_new_backing = blk_new(BLK_PERM_CONSISTENT_READ,
                                           BLK_PERM_ALL);
                 ret = blk_insert_bs(blk_new_backing, prefix_chain_bs,
-- 
2.21.0