conf: Fix memory leak in virCPUDefParseXML

Since a08669c3, @tsc is not automatically free'd by any g_auto* method.

Found by Coverity.
Signed-off-by: NJohn Ferlan <jferlan@redhat.com>
Reviewed-by: NPeter Krempa <pkrempa@redhat.com>

src/conf/cpu_conf.c

@@ -335,7 +335,7 @@ virCPUDefParseXML(xmlXPathContextPtr ctxt,
     g_autofree char *vendor_id = NULL;
     g_autofree char *tscScaling = NULL;
     g_autofree char *migratable = NULL;
-    virHostCPUTscInfoPtr tsc = NULL;
+    g_autofree virHostCPUTscInfoPtr tsc = NULL;
 
     *cpu = NULL;