From bf4f28b727bdedbd7c88179c30d360e54568a62e Mon Sep 17 00:00:00 2001
From: Kevin Backhouse <kevinbackhouse@github.com>
Date: Mon, 5 Sep 2022 17:48:28 +0100
Subject: [PATCH] Avoid potential integer overflow.

---
 src/quicktimevideo.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/quicktimevideo.cpp b/src/quicktimevideo.cpp
index 5362ea1f..1c54b01b 100644
--- a/src/quicktimevideo.cpp
+++ b/src/quicktimevideo.cpp
@@ -803,7 +803,7 @@ void QuickTimeVideo::userDataDecoder(size_t size_external) {
 
     tv = find(userDataReferencetags, Exiv2::toString(buf.data()));
 
-    if (size == 0 || (size - 12) <= 0)
+    if (size <= 12)
       break;
 
     else if (equalsQTimeTag(buf, "DcMD") || equalsQTimeTag(buf, "NCDT"))