Fix "Task not known" error masking real error message in some situations
Detail: c/armsys - _desktop_report now always caches the error message in the local error block. This avoids the error potentially being overwritten with "Task not known" if TaskManager_TaskNameFromHandle fails. Admin: Tested on Raspberry Pi Version 5.72. Tagged as 'RISC_OSLib-5_72'
Showing with 18 additions and 19 deletions