libopenal change in version 1.18.2 breaks sound

[pjbroad]

I was emailed by a gentoo user experiencing sound breakage with libopenal verison 1.18.2, 1.15.1 works fine. Ubuntu 18.04 LTS is to be released soon and also uses libopenal verison 1.18.2 and I have found also breaks sound. I have tracked down the problem to usage of alGetSourcei(), discussed here: kcat/openal-soft#126 which tells of a change to the library removing behaviour EL is using but which is not part of the openAL specification. I do not yet understand how to fix this properly, even though the link above discussed a solution.

However, I have a temporary fix that works around the problem, see this patch.txt. It looks to me that the related code has been broken for some time.

[pjbroad]

Closing as fixed and opened new issue #51 for the sound code refresh.