wxWidgets-gtk3: fix some cross builds.

Projects that include <wx/setup.h> use wx-config to get flags for where
it's located. For example, "-I
/usr/armv7l-linux-musleabihf/lib/wx/include/gtk3-unicode-3.0".
Unfortunately, wx-config uses libdir from the native package,
/usr/lib$host_wordsize, which breaks cross builds for targets with
different word sizes.

Fix this by changing "lib$wordsize" to "lib".

Fixes #27495

srcpkgs/wxWidgets-gtk3/template

@@ -1,7 +1,7 @@
 # Template file for 'wxWidgets-gtk3'
 pkgname=wxWidgets-gtk3
 version=3.0.5.1
-revision=3
+revision=4
 wrksrc="wxWidgets-${version}"
 build_style=gnu-configure
 configure_args="--with-gtk=3 --enable-unicode --with-opengl --with-sdl
@@ -34,11 +34,12 @@ post_install() {
 	ln -sf ../lib/wx/config/${_config} ${DESTDIR}/usr/bin/wx-config-gtk3
 	#   - ignore --host option; breaks configure scripts when
 	#     cross compiling (isn’t necessary in our case anyway)
-	sed -i -e '/^libdir="\/usr/s,/usr,${exec_prefix},' \
+	vsed -i -e '/^libdir="\/usr/s,/usr,${exec_prefix},' \
 		-e '/^bindir="\/usr/s,/usr,${exec_prefix},' \
 		-e 's/is_cross().*/is_cross() { false; }/g' \
 		-e '/--\*=\*)/i --host=\*) continue;;' \
-		$DESTDIR/usr/lib/wx/config/gtk3-unicode-3.0
+		-e "s/lib${XBPS_WORDSIZE}/lib/g" \
+		$DESTDIR/usr/lib/wx/config/${_config}
 }
 
 wxWidgets-common_package() {