From ad26a3f7f970bc66fee3d51ad4b0dbf40b0f0c82 Mon Sep 17 00:00:00 2001
From: Chris Hennick <hennickc@amazon.com>
Date: Thu, 11 May 2023 09:39:18 -0700
Subject: [PATCH] Bug fix

---
 src/spec.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/spec.rs b/src/spec.rs
index 2b133383..f1b5d6cc 100644
--- a/src/spec.rs
+++ b/src/spec.rs
@@ -192,8 +192,11 @@ impl Zip64CentralDirectoryEnd {
                     archive_offset,
                 ));
             }
-
-            pos -= 1;
+            if pos > 0 {
+                pos -= 1;
+            } else {
+                break;
+            }
         }
 
         Err(ZipError::InvalidArchive(