[zstd] Fix seqStore growth
We could undersize the literals buffer by up to 11 bytes,
due to a combination of 2 bugs:
* The literals buffer didn't have `WILDCOPY_OVERLENGTH` extra
space, like it is supposed to.
* We didn't check the literals buffer size in `ZSTD_sufficientBuff()`.
diff --git a/lib/common/zstd_internal.h b/lib/common/zstd_internal.h
index 778d72e..e75adfa 100644
--- a/lib/common/zstd_internal.h
+++ b/lib/common/zstd_internal.h
@@ -193,6 +193,7 @@
BYTE* mlCode;
BYTE* ofCode;
size_t maxNbSeq;
+ size_t maxNbLit;
U32 longLengthID; /* 0 == no longLength; 1 == Lit.longLength; 2 == Match.longLength; */
U32 longLengthPos;
} seqStore_t;