[v9_9] zone parsing broken with embedded null

3534.	[bug]		Extra text after an embedded NULL was ignored when
			parsing zone files. [RT #32699]
(cherry picked from commit 4bf686cf5d)

bin/tests/system/checkzone/tests.sh

@@ -30,4 +30,14 @@ do
 	status=`expr $status + $ret`
 done
 
+for db in zones/bad*.db
+do
+	echo "I:checking $db ($n)"
+	ret=0
+	$CHECKZONE -i local example $db > test.out.$n 2>&1 && ret=1
+	n=`expr $n + 1`
+	if [ $ret != 0 ]; then echo "I:failed"; fi
+	status=`expr $status + $ret`
+done
+
 exit $status