Fixed SDMMD_AMDErrorString returning NULL for ANY error code that isn't a runtime-generated error code.
Fixed SDMMD_AMDErrorString returning NULL for ANY error code that isn't a runtime-generated error code.

samdmarshall/SDMMobileDevice,samdmarshall/SDMMobileDevice,samdmarshall/SDMMobileDevice,samdmarshall/SDMMobileDevice,samdmarshall/SDMMobileDevice,samdmarshall/SDMMobileDevice