Fix data corruption in LZ/LZMA2 encoder.

Thanks to Jonathan Stott for the bug report.

diff --git a/src/liblzma/lz/lz_encoder.h b/src/liblzma/lz/lz_encoder.h
index 4904c22..35e9ebb 100644 (file)
--- a/src/liblzma/lz/lz_encoder.h
+++ b/src/liblzma/lz/lz_encoder.h
@@ -234,7 +234,7 @@ mf_avail(const lzma_mf *mf)
 static inline uint32_t
 mf_unencoded(const lzma_mf *mf)
 {
-       return mf->write_pos - mf->read_pos - mf->read_ahead;
+       return mf->write_pos - mf->read_pos + mf->read_ahead;
 }