Revert "expat: backport the fix for CVE-2022-43680"

Prepare for version bump which includes this fix

This reverts commit 791fe354e5887af3fa3d3f772fafacc5eaedca21.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/expat/expat/CVE-2022-43680.patch

@@ -1,33 +0,0 @@
-CVE: CVE-2022-43680
-Upstream-Status: Backport [5290462a7ea1278a8d5c0d5b2860d4e244f997e4]
-Signed-off-by: Ross Burton <ross.burton@arm.com>
-
-From 5290462a7ea1278a8d5c0d5b2860d4e244f997e4 Mon Sep 17 00:00:00 2001
-From: Sebastian Pipping <sebastian@pipping.org>
-Date: Tue, 20 Sep 2022 02:44:34 +0200
-Subject: [PATCH] lib: Fix overeager DTD destruction in
- XML_ExternalEntityParserCreate
-
----
- expat/lib/xmlparse.c | 8 ++++++++
- 1 file changed, 8 insertions(+)
-
-diff --git a/lib/xmlparse.c b/lib/xmlparse.c
-index aacd6e7fc..57bf103cc 100644
---- a/lib/xmlparse.c
-+++ b/lib/xmlparse.c
-@@ -1068,6 +1068,14 @@ parserCreate(const XML_Char *encodingName,
-   parserInit(parser, encodingName);
- 
-   if (encodingName && ! parser->m_protocolEncodingName) {
-+    if (dtd) {
-+      // We need to stop the upcoming call to XML_ParserFree from happily
-+      // destroying parser->m_dtd because the DTD is shared with the parent
-+      // parser and the only guard that keeps XML_ParserFree from destroying
-+      // parser->m_dtd is parser->m_isParamEntity but it will be set to
-+      // XML_TRUE only later in XML_ExternalEntityParserCreate (or not at all).
-+      parser->m_dtd = NULL;
-+    }
-     XML_ParserFree(parser);
-     return NULL;
-   }

meta/recipes-core/expat/expat_2.4.9.bb

@@ -9,7 +9,6 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=7b3b078238d0901d3b339289117cb7fb"
 VERSION_TAG = "${@d.getVar('PV').replace('.', '_')}"
 
 SRC_URI = "https://github.com/libexpat/libexpat/releases/download/R_${VERSION_TAG}/expat-${PV}.tar.bz2  \
-           file://CVE-2022-43680.patch \
            file://run-ptest \
            "