File _service:tar_scm:backport-002-CVE-2023-52425.patch of Package expat

File _service:tar_scm:backport-002-CVE-2023-52425.patch of Package expat (Revision a74bb01341631865d5be8fead9d98079)

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From c3a4816e175ede7da1a692a50d6251efdfe41a45 Mon Sep 17 00:00:00 2001
From: Snild Dolkow <snild@sony.com>
Date: Mon, 4 Sep 2023 17:21:14 +0200
Subject: [PATCH] Don't update partial token heuristic on error

Reference: https://github.com/libexpat/libexpat/pull/789/commits/1b9d398517befeb944cbbadadf10992b07e96fa2
Conflict: no

Suggested-by: Sebastian Pipping <sebastian@pipping.org>
---
 lib/xmlparse.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/lib/xmlparse.c b/lib/xmlparse.c
index 32df1eb9..a8414dd7 100644
--- a/lib/xmlparse.c
+++ b/lib/xmlparse.c
@@ -963,11 +963,13 @@ callProcessor(XML_Parser parser, const char *start, const char *end,
     }
   }
   const enum XML_Error ret = parser->m_processor(parser, start, end, endPtr);
-  // if we consumed nothing, remember what we had on this parse attempt.
-  if (*endPtr == start) {
-    parser->m_partialTokenBytesBefore = have_now;
-  } else {
-    parser->m_partialTokenBytesBefore = 0;
+  if (ret == XML_ERROR_NONE) {
+    // if we consumed nothing, remember what we had on this parse attempt.
+    if (*endPtr == start) {
+      parser->m_partialTokenBytesBefore = have_now;
+    } else {
+      parser->m_partialTokenBytesBefore = 0;
+    }
   }
   return ret;
 }
-- 
2.33.0