From: Yann Collet <cyan@fb.com>
Date: Tue, 22 Oct 2024 23:06:07 +0000 (-0700)
Subject: rewrite penalty update
X-Git-Tag: v1.5.7^2~71^2~11
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=16450d0732ff84e3ad367f616d84cee1567cfb8e;p=thirdparty%2Fzstd.git

rewrite penalty update

suggested by @terrelln
---

diff --git a/lib/compress/zstd_preSplit.c b/lib/compress/zstd_preSplit.c
index 02751a0d4..2e65f88d9 100644
--- a/lib/compress/zstd_preSplit.c
+++ b/lib/compress/zstd_preSplit.c
@@ -161,7 +161,7 @@ static size_t ZSTD_splitBlock_byChunks(const void* src, size_t srcSize,
             return pos;
         } else {
             mergeEvents(&fpstats->pastEvents, &fpstats->newEvents);
-            penalty = penalty - 1 + (penalty == 0);
+            if (penalty > 0) penalty--;
         }
     }
     assert(pos == blockSizeMax);