[libvirt] [PATCH] virsh: Do not try to free domain if it is NULL

[Osier Yang]

Without these patch, there will be error like below if domain
is NULL.

error: invalid domain pointer in virDomainFree

Which is useless.
---
 tools/virsh.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/tools/virsh.c b/tools/virsh.c
index 7d849ec..5f7bbcb 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -5201,16 +5201,16 @@ blockJobImpl(vshControl *ctl, const vshCmd *cmd,
     int ret = -1;
 
     if (!vshConnectionUsability(ctl, ctl->conn))
-        goto out;
+        goto cleanup;
 
     if (!(dom = vshCommandOptDomain(ctl, cmd, &name)))
-        goto out;
+        goto cleanup;
 
     if (vshCommandOptString(cmd, "path", &path) < 0)
-        goto out;
+        goto cleanup;
 
     if (vshCommandOptUL(cmd, "bandwidth", &bandwidth) < 0)
-        goto out;
+        goto cleanup;
 
     if (mode == VSH_CMD_BLOCK_JOB_ABORT)
         ret = virDomainBlockJobAbort(dom, path, 0);
@@ -5221,8 +5221,8 @@ blockJobImpl(vshControl *ctl, const vshCmd *cmd,
     else if (mode == VSH_CMD_BLOCK_JOB_PULL)
         ret = virDomainBlockPull(dom, path, bandwidth, 0);
 
-out:
-    virDomainFree(dom);
+cleanup:
+    if (dom) virDomainFree(dom);
     return ret;
 }
 
-- 
1.7.6