listCURRENT_LIST_LENGTH のところから、抜けない

     #if ( ( configUSE_PREEMPTION == 1 ) && ( configIDLE_SHOULD_YIELD == 1 ) )
        {
            if( listCURRENT_LIST_LENGTH( &( pxReadyTasksLists[ tskIDLE_PRIORITY ] ) ) > ( UBaseType_t ) 1 )
            {
                taskYIELD();
            }
            else
            {
                mtCOVERAGE_TEST_MARKER();
            }
        }
        #endif /* ( ( configUSE_PREEMPTION == 1 ) && ( configIDLE_SHOULD_YIELD == 1 ) ) */