Bug#918543: ring build depends on libsrtp-dev that is not in buster

[Bernhard Schmidt]

Am 07.01.19 um 10:56 schrieb Adrian Bunk:
> Source: ring
> Version: 20180119.1.9e06f94~ds120181001.4.a99aaec~ds6-2
> Severity: serious
> Tags: ftbfs
> Control: block 910292 by -1
> 
> ring build depends on libsrtp-dev that is not in buster,
> see #910292 for background.
> 

According to the buildlog it builds an embedded copy of libsrtp, and the
resulting binary does not depend on libsrtp. So I guess the build-dep
can be dropped.

OTOH it would probably make sense to have the embedded libpjproject use
the system libsrtp2.

Bernhard