getaddrinfo returns ENOTFOUND for invalid domain names

change test-http-dns-error to reflect this.

lib/dns.js

@@ -32,7 +32,7 @@ function errnoException(errorno, syscall) {
 
   // For backwards compatibility. libuv returns ENOENT on NXDOMAIN.
   if (errorno == 'ENOENT') {
-    errorno = 'EBADNAME'
+    errorno = 'ENOTFOUND'
   }
 
   e.errno = e.code = errorno;

test/simple/test-http-dns-error.js

@@ -46,14 +46,14 @@ function test(mod) {
   // Ensure that there is time to attach an error listener.
   var req = mod.get({host: host, port: 42}, do_not_call);
   req.on('error', function(err) {
-    assert.equal(err.code, 'EBADNAME');
+    assert.equal(err.code, 'ENOTFOUND');
     actual_bad_requests++;
   });
   // http.get() called req.end() for us
 
   var req = mod.request({method: 'GET', host: host, port: 42}, do_not_call);
   req.on('error', function(err) {
-    assert.equal(err.code, 'EBADNAME');
+    assert.equal(err.code, 'ENOTFOUND');
     actual_bad_requests++;
   });
   req.end();