findutils: fix musl builds by applying changes from chroot-findutils.

srcpkgs/findutils/template

@@ -17,6 +17,17 @@ make_dirs="/var/lib/locate 0755 root root"
 conf_files="/etc/updatedb.conf"
 conflicts="chroot-findutils>=0"
 
+pre_configure() {
+	case "$XBPS_TARGET_MACHINE" in
+	*-musl)
+		# Special case for musl libc; "fix" issues with gnulib.
+		: > gnulib/lib/freadahead.c
+		: > gnulib/lib/fseeko.c
+		echo "void close_stdin(void) {}" > gnulib/lib/closein.c
+		;;
+	esac
+}
+
 post_install() {
 	# Install the cron daily job.
 	vinstall ${FILESDIR}/updatedb.cron-daily 744 etc/cron.daily updatedb