Changes

Summary

1. add missing #position:  in MemoryFileWriteStream. Fixes #4403 (details)

Commit 70d112297413681421aac24c75f12397b4e67aa2 by christophe.demarey add missing #position:  in MemoryFileWriteStream. Fixes #4403
	src/FileSystem-Memory/MemoryFileWriteStream.class.st (diff)