Fix buffer test

test/simple/test-buffer.js

@@ -523,4 +523,6 @@ assert.equal(0xef, b[3]);
 
 
 // This should not segfault the program.
-new Buffer('"pong"', 0, 6, 8031, '127.0.0.1')
+assert.throws(function() {
+  new Buffer('"pong"', 0, 6, 8031, '127.0.0.1')
+});