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virsh: fix snapshot list --parent

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The root snapshot does not have a parent.
Use NULLSTR_EMPTY to pass an empty string instead of putting
too few columns in the table.

https://bugzilla.redhat.com/show_bug.cgi?id=1662849

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Ján Tomko 2019-02-14 14:45:12 +01:00
parent 4b23f18d2c
commit d3e5c3605a
1 changed files with 2 additions and 1 deletions
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3
tools/virsh-snapshot.c
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@ -1608,7 +1608,8 @@ cmdSnapshotList(vshControl *ctl, const vshCmd *cmd)
&time_info);
if (parent) {
if (vshTableRowAppend(table, snap_name, timestr, state, parent_snap,
if (vshTableRowAppend(table, snap_name, timestr, state,
NULLSTR_EMPTY(parent_snap),
NULL) < 0)
goto cleanup;
} else {