net-misc/FORT-validator: declare read-only parameter's type as const

Fixes build failure due to -Wincompatible-pointer-types

Closes: https://bugs.gentoo.org/928331
Signed-off-by: Lucio Sauer <watermanpaint@posteo.net>

net-misc/FORT-validator/FORT-validator-1.5.4-r1.ebuild

@@ -1,4 +1,4 @@
-# Copyright 2020-2021 Gentoo Authors
+# Copyright 2020-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -18,6 +18,8 @@ SLOT="0"
 KEYWORDS="~amd64 ~x86"
 IUSE="caps"
 
+PATCHES="${FILESDIR}"/${PN}-1.5.4-GCC14.patch
+
 DEPEND="
 	acct-group/fort
 	acct-user/fort

net-misc/FORT-validator/FORT-validator-1.6.1-r1.ebuild

@@ -1,4 +1,4 @@
-# Copyright 2020-2021 Gentoo Authors
+# Copyright 2020-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -18,6 +18,8 @@ SLOT="0"
 KEYWORDS="~amd64 ~x86"
 IUSE="caps"
 
+PATCHES="${FILESDIR}"/${PN}-1.5.4-GCC14.patch
+
 DEPEND="
 	acct-group/fort
 	acct-user/fort

net-misc/FORT-validator/FORT-validator-1.6.2-r1.ebuild

@@ -1,4 +1,4 @@
-# Copyright 2020-2021 Gentoo Authors
+# Copyright 2020-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -16,6 +16,8 @@ SLOT="0"
 KEYWORDS="~amd64 ~x86"
 IUSE="caps"
 
+PATCHES="${FILESDIR}"/${PN}-1.5.4-GCC14.patch
+
 DEPEND="
 	acct-group/fort
 	acct-user/fort

net-misc/FORT-validator/files/FORT-validator-1.5.4-GCC14.patch

@@ -0,0 +1,28 @@
+https://github.com/NICMx/FORT-validator/pull/137
+
+Since we don't manipulate any struct members, I believe we can safely take a
+const xmlError * argument instead, as per libxml2's documentation .
+
+I also believe we can drop the string-termination handling, because C strings
+end with \0 and therefore ptr[strlen(ptr)-1] is always \0.
+
+Author: Lucio Sauer <watermanpaint@posteo.net>
+--- a/src/xml/relax_ng.c
++++ b/src/xml/relax_ng.c
+@@ -36,14 +36,9 @@ relax_ng_log_warn(void *ctx, const char *msg, ...)
+ }
+
+ static void
+-relax_ng_log_str_err(void *userData, xmlErrorPtr error)
++relax_ng_log_str_err(void *userData, const xmlError *error)
+ {
+-       char *ptr;
+-
+-       ptr = error->message;
+-       if (ptr[strlen(ptr) - 1] == '\n')
+-               ptr[strlen(ptr) - 1] = '\0';
+-       pr_val_err("%s (at line %d)", ptr, error->line);
++       pr_val_err("%s (at line %d)", error->message, error->line);
+ }
+
+ /* Initialize global schema to parse RRDP files */