[PATCH] virsh: add error return value

[Alex Jia <ajia@xxxxxxxxxx>]

* tools/virsh.c (cmdSnapshotList): Avoiding to continue to execute subsequent
  codes, the programming should return false when meeting a error.

For details, please see the following link:
RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=807545

Signed-off-by: Alex Jia <ajia@xxxxxxxxxx>
---
 tools/virsh.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/tools/virsh.c b/tools/virsh.c
index 5009b6b..7e74744 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -16374,6 +16374,7 @@ cmdSnapshotList(vshControl *ctl, const vshCmd *cmd)
         if (from) {
             vshError(ctl, "%s",
                      _("--roots and --from are mutually exclusive"));
+            return false;
         }
         flags |= VIR_DOMAIN_SNAPSHOT_LIST_ROOTS;
     }
-- 
1.7.1

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