flowRequestContext not available in error.vm

[Tom Zeller]

> On the error.vm template however, it simply outputs $flowExecutionUrl,
> not the actual flow execution url. Am I missing something or is this a
> bug? From the comments it seems like it should work.

I don't think it's a bug (in the IdP). Looking at the Spring Web Flow
code, it looks like $flowExecutionUrl may be null depending on where
in the flow the error has occurred, I believe a view needs to be
rendered first.