test-visitor-serialization: Fix some memory leaks

This patch fixes some of the memory leaks in test-visitor-serialization but not all of them.
Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

tests/test-visitor-serialization.c

@@ -258,6 +258,7 @@ static void test_primitives(gconstpointer opaque)
     g_assert(pt_copy != NULL);
     if (pt->type == PTYPE_STRING) {
         g_assert_cmpstr(pt->value.string, ==, pt_copy->value.string);
+        g_free((char *)pt_copy->value.string);
     } else if (pt->type == PTYPE_NUMBER) {
         /* we serialize with %f for our reference visitors, so rather than fuzzy
          * floating math to test "equality", just compare the formatted values
@@ -275,6 +276,7 @@ static void test_primitives(gconstpointer opaque)
 
     ops->cleanup(serialize_data);
     g_free(args);
+    g_free(pt_copy);
 }
 
 static void test_struct(gconstpointer opaque)
@@ -660,6 +662,7 @@ static void qmp_deserialize(void **native_out, void *datap,
 
     QDECREF(output_json);
     d->qiv = qmp_input_visitor_new(obj);
+    qobject_decref(obj);
     visit(qmp_input_get_visitor(d->qiv), native_out, errp);
 }
 
@@ -668,9 +671,12 @@ static void qmp_cleanup(void *datap)
     QmpSerializeData *d = datap;
     qmp_output_visitor_cleanup(d->qov);
     qmp_input_visitor_cleanup(d->qiv);
+
+    g_free(d);
 }
 
 typedef struct StringSerializeData {
+    char *string;
     StringOutputVisitor *sov;
     StringInputVisitor *siv;
 } StringSerializeData;
@@ -690,15 +696,19 @@ static void string_deserialize(void **native_out, void *datap,
 {
     StringSerializeData *d = datap;
 
-    d->siv = string_input_visitor_new(string_output_get_string(d->sov));
+    d->string = string_output_get_string(d->sov);
+    d->siv = string_input_visitor_new(d->string);
     visit(string_input_get_visitor(d->siv), native_out, errp);
 }
 
 static void string_cleanup(void *datap)
 {
     StringSerializeData *d = datap;
+
     string_output_visitor_cleanup(d->sov);
     string_input_visitor_cleanup(d->siv);
+    g_free(d->string);
+    g_free(d);
 }
 
 /* visitor registration, test harness */