Commented Issue: Fix null ref when accessing requestContext [1291]

Need null check for requestContext before caching routeData.

RouteData routeData = requestContext.RouteData;
if (requestContext != null && routeData != null)


See solution in pull request: #4
This was changed in: https://aspnetwebstack.codeplex.com/SourceControl/changeset/42e01a3dc64c06d3e128ec38c2cc362d96c587e2 which cached routeData.

Comments: Pretty minor code cleanup change without any impact .