[libvirt] [PATCH 06/19] qemu_agent: Resolve Coverity RESOURCE_LEAK

[John Ferlan]

Coverity found that on error paths, the 'arg' value wasn't be cleaned
up. Followed the example in qemuAgentSetVCPUs() where upon successful call
to qemuAgentCommand() the 'cpus' is set to NULL; otherwise, when cleanup
occurs the free the memory for 'arg'

Signed-off-by: John Ferlan <jferlan at redhat.com>
---
 src/qemu/qemu_agent.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/qemu/qemu_agent.c b/src/qemu/qemu_agent.c
index a10954a..fe38f6d 100644
--- a/src/qemu/qemu_agent.c
+++ b/src/qemu/qemu_agent.c
@@ -1328,7 +1328,7 @@ int qemuAgentFSFreeze(qemuAgentPtr mon, const char **mountpoints,
                       unsigned int nmountpoints)
 {
     int ret = -1;
-    virJSONValuePtr cmd, arg;
+    virJSONValuePtr cmd, arg = NULL;
     virJSONValuePtr reply = NULL;
 
     if (mountpoints && nmountpoints) {
@@ -1343,7 +1343,8 @@ int qemuAgentFSFreeze(qemuAgentPtr mon, const char **mountpoints,
     }
 
     if (!cmd)
-        return -1;
+        goto cleanup;
+    arg = NULL;
 
     if (qemuAgentCommand(mon, cmd, &reply, true,
                          VIR_DOMAIN_QEMU_AGENT_COMMAND_BLOCK) < 0)
@@ -1355,6 +1356,7 @@ int qemuAgentFSFreeze(qemuAgentPtr mon, const char **mountpoints,
     }
 
  cleanup:
+    virJSONValueFree(arg);
     virJSONValueFree(cmd);
     virJSONValueFree(reply);
     return ret;
-- 
1.9.3