From 4258eba6ed3adf1a8f7c4126cf18575527255fab Mon Sep 17 00:00:00 2001
From: Peter Krempa <pkrempa@redhat.com>
Date: Thu, 28 Nov 2019 14:58:55 +0100
Subject: [PATCH] qemu: Check for explicit failure of
 qemuBlockSnapshotAddBlockdev

Check that the value is less than 0.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 src/qemu/qemu_driver.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index e65150f42b..0a4a2471c7 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -15592,7 +15592,7 @@ qemuDomainSnapshotCreateDiskActive(virQEMUDriverPtr driver,
         if (blockdev) {
             if (qemuBlockSnapshotAddBlockdev(actions,
                                              diskdata[i].disk,
-                                             diskdata[i].src))
+                                             diskdata[i].src) < 0)
                 goto cleanup;
         } else {
             if (qemuBlockSnapshotAddLegacy(actions,