conf: use correct free function for virDomainDeviceDef

Simple g_autofree is not enough if we put allocated
data into the device structure.

Define the AUTOPTR_CLEANUP function and use it here.
Signed-off-by: NJán Tomko <jtomko@redhat.com>
Reported-by: NXu Yandong <xuyandong2@huawei.com>
Reviewed-by: NPeter Krempa <pkrempa@redhat.com>

src/conf/domain_conf.c

@@ -16516,7 +16516,7 @@ virDomainDeviceDefParse(const char *xmlStr,
     g_autoptr(xmlDoc) xml = NULL;
     xmlNodePtr node;
     g_autoptr(xmlXPathContext) ctxt = NULL;
-    g_autofree virDomainDeviceDefPtr dev = NULL;
+    g_autoptr(virDomainDeviceDef) dev = NULL;
 
     if (!(xml = virXMLParseStringCtxt(xmlStr, _("(device_definition)"), &ctxt)))
         return NULL;

src/conf/domain_conf.h

@@ -2916,6 +2916,7 @@ void virDomainRedirdevDefFree(virDomainRedirdevDefPtr def);
 void virDomainRedirFilterDefFree(virDomainRedirFilterDefPtr def);
 void virDomainShmemDefFree(virDomainShmemDefPtr def);
 void virDomainDeviceDefFree(virDomainDeviceDefPtr def);
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(virDomainDeviceDef, virDomainDeviceDefFree);
 virDomainDeviceDefPtr virDomainDeviceDefCopy(virDomainDeviceDefPtr src,
                                              const virDomainDef *def,
                                              virDomainXMLOptionPtr xmlopt,