fix inflate: _tr_tally function argument calculation

lib/zlib/deflate.js

@@ -770,8 +770,7 @@ function deflate_slow(s, flush) {
 
       /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,
                      s.prev_length - MIN_MATCH, bflush);***/
-      bflush = trees._tr_tally(s, s.strstart - 1- s.match_start, s.prev_length - MIN_MATCH);
-
+      bflush = trees._tr_tally(s, s.strstart - 1- s.prev_match, s.prev_length - MIN_MATCH);
       /* Insert in hash table all strings up to the end of the match.
        * strstart-1 and strstart are already inserted. If there is not
        * enough lookahead, the last two strings are not inserted in