dbus: Fix memleak and remove warnings

modules/control/dbus/dbus.c

@@ -1259,6 +1259,8 @@ int GetInputMeta( input_item_t* p_input,
     ADD_VLC_META_STRING( 24, Setting );
     ADD_VLC_META_STRING( 25, URL );
 
+    free( psz_trackid );
+
     vlc_mutex_lock( &p_input->lock );
     if( p_input->p_meta )
     {

modules/control/dbus/dbus_tracklist.c

@@ -364,7 +364,7 @@ PropertiesChangedSignal( intf_thread_t    *p_intf,
                          vlc_dictionary_t *p_changed_properties )
 {
     DBusConnection  *p_conn = p_intf->p_sys->p_conn;
-    DBusMessageIter changed_properties, invalidated_properties, entry, variant;
+    DBusMessageIter changed_properties, invalidated_properties;
     const char *psz_interface_name = DBUS_MPRIS_TRACKLIST_INTERFACE;
     char **ppsz_properties = NULL;
     int i_properties = 0;