blktap2: Fix uninitialised value error.

Signed-off-by: Keir Fraser <keir@xen.org>

diff --git a/tools/blktap2/drivers/block-qcow.c b/tools/blktap2/drivers/block-qcow.c
index ac55ac938742f0bb32203477ecd407164f6ef2aa..d5053d41748bec9b7e43488e64b550f192fe77f7 100644 (file)
--- a/tools/blktap2/drivers/block-qcow.c
+++ b/tools/blktap2/drivers/block-qcow.c
@@ -1428,7 +1428,7 @@ int tdqcow_get_parent_id(td_driver_t *driver, td_disk_id_t *id)
 {
        off_t off;
        char *buf, *filename;
-       int len, secs, type, err = -EINVAL;
+       int len, secs, type = 0, err = -EINVAL;
        struct tdqcow_state *child  = (struct tdqcow_state *)driver->data;
 
        if (!child->backing_file_offset)