bc48060ff0
* Fix a segmentation fault on some samples when the memory type is 3 (OUT_SURFACE_MEM_NOT_MAPPED) and attempting to save the output (which is not supported)
* update the videoDecodeMultiFiles sample
* update the readme for videoDecodeMultiFiles
* add comments
* use OUT_SURFACE_MEM_NOT_MAPPED instead of integer number 3
[ROCm/rocdecode commit: 31c7c7c104]