diff --git a/third_party/xz-4.999.9beta/src/liblzma/lz/lz_encoder.c b/third_party/xz-4.999.9beta/src/liblzma/lz/lz_encoder.c
index c4154f598..c7c874e83 100644
--- a/third_party/xz-4.999.9beta/src/liblzma/lz/lz_encoder.c
+++ b/third_party/xz-4.999.9beta/src/liblzma/lz/lz_encoder.c
@@ -501,7 +501,10 @@ lzma_lz_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
 		next->coder->lz.end = NULL;
 
 		next->coder->mf.buffer = NULL;
+                next->coder->mf.size = 0;
 		next->coder->mf.hash = NULL;
+                next->coder->mf.hash_size_sum = 0;
+                next->coder->mf.sons_count = 0;
 
 		next->coder->next = LZMA_NEXT_CODER_INIT;
 	}