1 files changed, 5 insertions, 11 deletions

diff --git a/qemu/qobject/qstring.c b/qemu/qobject/qstring.c
index 607b7a142..5da7b5f37 100644
--- a/qemu/qobject/qstring.c
+++ b/qemu/qobject/qstring.c
@@ -10,17 +10,11 @@
  * See the COPYING.LIB file in the top-level directory.
  */
 
+#include "qemu/osdep.h"
 #include "qapi/qmp/qobject.h"
 #include "qapi/qmp/qstring.h"
 #include "qemu-common.h"
 
-static void qstring_destroy_obj(QObject *obj);
-
-static const QType qstring_type = {
-    .code = QTYPE_QSTRING,
-    .destroy = qstring_destroy_obj,
-};
-
 /**
  * qstring_new(): Create a new empty QString
  *
@@ -49,6 +43,7 @@ QString *qstring_from_substr(const char *str, int start, int end)
     QString *qstring;
 
     qstring = g_malloc(sizeof(*qstring));
+    qobject_init(QOBJECT(qstring), QTYPE_QSTRING);
 
     qstring->length = end - start + 1;
     qstring->capacity = qstring->length;
@@ -57,7 +52,6 @@ QString *qstring_from_substr(const char *str, int start, int end)
     memcpy(qstring->string, str + start, qstring->length);
     qstring->string[qstring->length] = 0;
 
-    QOBJECT_INIT(qstring, &qstring_type);
 
     return qstring;
 }
@@ -117,9 +111,9 @@ void qstring_append_chr(QString *qstring, int c)
  */
 QString *qobject_to_qstring(const QObject *obj)
 {
-    if (qobject_type(obj) != QTYPE_QSTRING)
+    if (!obj || qobject_type(obj) != QTYPE_QSTRING) {
         return NULL;
-
+    }
     return container_of(obj, QString, base);
 }
 
@@ -138,7 +132,7 @@ const char *qstring_get_str(const QString *qstring)
  * qstring_destroy_obj(): Free all memory allocated by a QString
  * object
  */
-static void qstring_destroy_obj(QObject *obj)
+void qstring_destroy_obj(QObject *obj)
 {
     QString *qs;