squid: fix esi PACKAGECONFIG

libxml has derecated the "xmlSetFeature" call, and hid is behind a special
config flag (--with-legacy), which is not used by default in oe-core.

This makes compilation fail, when "esi" PACKAGECONFIG is enabled:

Libxml2Parser.cc:94:5: error: 'xmlSetFeature' was not declared in this scope; did you mean 'xmlHasFeature'?

This backported patch fixes this.

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>

meta-networking/recipes-daemons/squid/files/0001-ESI-Drop-incorrect-and-unnecessary-xmlSetFeature-cal.patch

@@ -0,0 +1,35 @@
+From c312f7fa80371cc6db583590258381ebc7cd18f6 Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Sun, 20 Feb 2022 19:42:40 +0000
+Subject: [PATCH] ESI: Drop incorrect and unnecessary xmlSetFeature() call
+ (#988)
+
+xmlSetFeature() has been deprecated for 10+ years and will eventually be
+removed from libxml2. Squid calls xmlSetFeature() with the wrong
+argument: a nil `value` pointer instead of a pointer to a zero value.
+When called with a nil `value`, the function does nothing but returning
+an error. Squid does not check whether xmlSetFeature() call is
+successful, and the bug went unnoticed since libxml2 support was added
+in commit 964b44c.
+
+Since libxml2 does not substitute entities by default, the call can be
+removed to achieve the intended effect.
+
+Upstream-Status: Backport [https://github.com/squid-cache/squid/commit/5db4df2c6f83b5c26357f4439d28b92ef7071cd5]
+Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
+---
+ src/esi/Libxml2Parser.cc | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/src/esi/Libxml2Parser.cc b/src/esi/Libxml2Parser.cc
+index 2b9ba0a..0301b77 100644
+--- a/src/esi/Libxml2Parser.cc
++++ b/src/esi/Libxml2Parser.cc
+@@ -91,7 +91,6 @@ ESILibxml2Parser::ESILibxml2Parser(ESIParserClient *aClient) : theClient (aClien
+ 
+     /* TODO: grab the document encoding from the headers */
+     parser = xmlCreatePushParserCtxt(&sax, static_cast<void *>(this), NULL, 0, NULL);
+-    xmlSetFeature(parser, "substitute entities", 0);
+ 
+     if (entity_doc == NULL)
+         entity_doc = htmlNewDoc(NULL, NULL);

meta-networking/recipes-daemons/squid/squid_4.15.bb

@@ -38,6 +38,7 @@ SRC_URI = "http://www.squid-cache.org/Versions/v${MAJ_VER}/${BPN}-${PV}.tar.bz2
            file://CVE-2022-41318.patch \
            file://CVE-2023-46724.patch \
            file://CVE-2025-59362.patch \
+           file://0001-ESI-Drop-incorrect-and-unnecessary-xmlSetFeature-cal.patch \
            "
 
 SRC_URI:remove:toolchain-clang = "file://0001-configure-Check-for-Wno-error-format-truncation-comp.patch"