attempt windows-friendly reproducible case for mochajs#2315

Author: boneskull

test/integration/fixtures/regression/issue-2315.js

@@ -1,6 +1,8 @@
 describe('issue-2315: cannot read property currentRetry of undefined', function () {
   before(function () {
-    require('http').createServer().listen(1);
+    process.nextTick(function () {
+      throw new Error();
+    });
   });
 
   it('something', function () {});