From: Nathan Moinvaziri <nathan@nathanm.com>
Date: Tue, 25 Feb 2020 14:20:54 +0000 (-0800)
Subject: Remove duplicate calculations in deflate_quick().
X-Git-Tag: 1.9.9-b1~340
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=232fa02a93f73e9830d9fff1dd91973567697fe3;p=thirdparty%2Fzlib-ng.git

Remove duplicate calculations in deflate_quick().
---

diff --git a/arch/x86/deflate_quick.c b/arch/x86/deflate_quick.c
index 9f6d6b6d9..74b904600 100644
--- a/arch/x86/deflate_quick.c
+++ b/arch/x86/deflate_quick.c
@@ -238,7 +238,7 @@ ZLIB_INTERNAL block_state deflate_quick(deflate_state *s, int flush) {
             dist = s->strstart - hash_head;
 
             if (dist > 0 && (dist-1) < (s->w_size - 1)) {
-                match_len = compare258(s->window + s->strstart, s->window + s->strstart - dist);
+                match_len = compare258(s->window + s->strstart, s->window + hash_head);
 
                 if (match_len >= MIN_MATCH) {
                     if (match_len > s->lookahead)
@@ -247,7 +247,7 @@ ZLIB_INTERNAL block_state deflate_quick(deflate_state *s, int flush) {
                     if (match_len > MAX_MATCH)
                         match_len = MAX_MATCH;
 
-                    static_emit_ptr(s, match_len - MIN_MATCH, s->strstart - hash_head);
+                    static_emit_ptr(s, match_len - MIN_MATCH, dist);
                     s->lookahead -= match_len;
                     s->strstart += match_len;
                     continue;