do not overflow exit status. [RT #42643]

bin/tests/system/rpzrecurse/tests.sh

@@ -335,5 +335,5 @@ if test $p1 -le $p2; then ret=1; fi
 if test $ret != 0; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-
-exit $status
+echo "I:exit status: $status"
+[ $status -eq 0 ] || exit 1