media-gfx/sane-airscan: add dev-libs/libxml2 subslot op for incoming ABI break

Signed-off-by: Alfred Wingate <parona@protonmail.com>
Part-of: https://github.com/gentoo/gentoo/pull/41919
Signed-off-by: Sam James <sam@gentoo.org>

media-gfx/sane-airscan/sane-airscan-0.99.27-r2.ebuild

@@ -1,4 +1,4 @@
-# Copyright 2021-2024 Gentoo Authors
+# Copyright 2021-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -16,7 +16,7 @@ KEYWORDS="amd64 ~x86"
 DEPEND="
 	net-dns/avahi
 	net-libs/gnutls
-	dev-libs/libxml2
+	dev-libs/libxml2:=
 	media-libs/libjpeg-turbo
 	media-libs/libpng
 "

media-gfx/sane-airscan/sane-airscan-0.99.29-r1.ebuild

@@ -14,7 +14,7 @@ SLOT="0"
 KEYWORDS="~amd64 ~arm64 ~x86"
 
 DEPEND="
-	dev-libs/libxml2
+	dev-libs/libxml2:=
 	media-libs/libjpeg-turbo:=
 	media-libs/libpng:=
 	media-libs/tiff:=