Correct failures for node v0.12

Author: Jason Olson

lib/connect_middleware.js

@@ -160,7 +160,11 @@ function hookResponseForValidation(context, eventEmitter) {
         var headers = res._headers || res.headers || {};
         var body = data || written;
         debugContent('response body type: %s value: %s', typeof body, body);
-        var validateResult = context.request.swagger.operation.validateResponse({statusCode: res.statusCode, headers, body});
+        var validateResult = context.request.swagger.operation.validateResponse({
+          statusCode: res.statusCode,
+          headers: headers,
+          body: body
+        });
         debug('validation result:', validateResult);
         if (validateResult.errors.length || validateResult.warnings.length) {
           debug('emitting responseValidationError');