Bug#941277: dispatch function missing in header file generated for RPC service

[Florian Weimer <fw@deneb.enyo.de>]

* Simon Richter:

> while implementing an RPC service (in 2019, no less!) I found out that the
> dispatch function generated by rpcgen is not listed in the generated header
> file, so if the service is generated without a main function or inetd
> interface, the code using it needs to create its own declaration.
>
> The signature is easy to guess, but nonetheless I think it should be
> provided by the header.

Ugh, can you describe exactly what is missing?  Then I can file it
here (or just submit a patch):

  <https://github.com/thkukuk/rpcsvc-proto>

Thanks.

(I'm not sure if we are going to patch glibc's rpcgen for this; nobody
is supposed to use it these days.)