fix long offset resolution

lib/common/zstd_internal.h

@@ -299,6 +299,7 @@ typedef struct {
     BYTE*  ofCode;
     size_t maxNbSeq;
     size_t maxNbLit;
+    BYTE* longOffsets;
 
     /* longLengthPos and longLengthType to allow us to represent either a single litLength or matchLength
      * in the seqStore that has a value larger than U16 (if it exists). To do so, we increment