+ * \param strm Pointer to properly prepared lzma_stream
+ * \param memlimit Memory usage limit as bytes. Use UINT64_MAX
+ * to effectively disable the limiter. liblzma
+ * 5.2.3 and earlier don't allow 0 here and return
+ * LZMA_PROG_ERROR; later versions treat 0 as if 1
+ * had been specified.
+ *