[PATCH] qemu: fix memory leak on some paths

[luzhipeng]

From: lu zhipeng <luzhipeng at cestc.cn>

virTypedParamsAddString may return -1 but alloc params,
so free it.

Signed-off-by: lu zhipeng <luzhipeng at cestc.cn>
---
 src/qemu/qemu_driver.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 94b70872d4..c4501cd705 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -4473,11 +4473,13 @@ qemuDomainPinVcpuLive(virDomainObj *vm,
         goto cleanup;
 
     event = virDomainEventTunableNewFromObj(vm, eventParams, eventNparams);
-
+    eventNparams = 0;
     ret = 0;
 
  cleanup:
     virObjectEventStateQueue(driver->domainEventState, event);
+    if (eventNparams)
+        virTypedParamsFree(eventParams, eventNparams);
     return ret;
 }
 
@@ -4682,6 +4684,7 @@ qemuDomainPinEmulator(virDomainPtr dom,
             goto endjob;
 
         event = virDomainEventTunableNewFromDom(dom, eventParams, eventNparams);
+        eventNparams = 0;
     }
 
     if (persistentDef) {
@@ -4700,6 +4703,8 @@ qemuDomainPinEmulator(virDomainPtr dom,
  cleanup:
     virObjectEventStateQueue(driver->domainEventState, event);
     virDomainObjEndAPI(&vm);
+    if (eventNparams)
+        virTypedParamsFree(eventParams, eventNparams);
     return ret;
 }
 
@@ -5079,6 +5084,7 @@ qemuDomainPinIOThread(virDomainPtr dom,
             goto endjob;
 
         event = virDomainEventTunableNewFromDom(dom, eventParams, eventNparams);
+        eventNparams = 0;
     }
 
     if (persistentDef) {
@@ -5106,6 +5112,8 @@ qemuDomainPinIOThread(virDomainPtr dom,
  cleanup:
     virObjectEventStateQueue(driver->domainEventState, event);
     virDomainObjEndAPI(&vm);
+    if (eventNparams)
+        virTypedParamsFree(eventParams, eventNparams);
     return ret;
 }
 
-- 
2.31.1