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>

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index e65150f42b682e4a2101b435580c45b4b14fbb11..0a4a2471c715c970753737fa520866c74b7e74b2 100644 (file)
--- 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,