Message 119224 - Python tracker

_Py_DecodeUTF8_surrogateescape() is a simplified version of 
PyUnicode_DecodeUTF8Stateful():
 - no "consumed" argument
 - only support surrogateescape error handler
 - no optimization
 - don't resize the buffer at exit

Hum, resize the buffer is maybe a good idea to not waste memory.