Use event different from 'error' for internal purposes
Use event different from 'error' for internal purposes

Up to now, 'error' was used internally to trigger the
stream cleanup handler; This was changed to 'error-cleanup'
so that unhandled errors don’t go unnoticed.

addaleax/lzma-native,addaleax/lzma-native,addaleax/lzma-native,addaleax/lzma-native