target-i386: Fix apic object leak when CPU is deleted

Signed-off-by: NIgor Mammedov <imammedo@redhat.com>
Reviewed-by: NEduardo Habkost <ehabkost@redhat.com>
Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>

target-i386/cpu.c

@@ -2828,6 +2828,7 @@ static void x86_cpu_apic_create(X86CPU *cpu, Error **errp)
 
     object_property_add_child(OBJECT(cpu), "lapic",
                               OBJECT(cpu->apic_state), &error_abort);
+    object_unref(OBJECT(cpu->apic_state));
 
     qdev_prop_set_uint8(cpu->apic_state, "id", cpu->apic_id);
     /* TODO: convert to link<> */