[openal] Preparing for OpenAL Soft's 1.23.0 release

[Chris Robinson]

On 1/28/23 03:05, Roland Plüss wrote:
> Hi,
> 
> If you could apply this one line patch for the release it would be nice: 
> https://github.com/LordOfDragons/dragengine/blob/master/extern/openal/patches/1.22.2/01_assert_fix.patch
> 
> Without this patch OpenAL sometimes hard-kills your application out of 
> the blue because some internal math can lead to a low value which I have 
> no control about. Better clamp than kill. I never found the root cause 
> of this problem but this small fix prevents all problems I have and you 
> never hear any difference.

Done.

It would be better to figure out the code path that's leading to a 
(nearly?) 0 filter gain, as BiquadFilterR<Real>::setParams is only 
called from two places: setParamsFromSlope, which applies its own gain 
limit before calling setParams (0.001 or higher, well above the 0.00001 
limit checked internally), and setParamsFromBandwidth, which only has 
two calls that have a variable gain value, that themselves have a 
limited range that stays plenty above 0. Which makes me concerned there 
could be memory corruption or something I'm missing.

But without a reproduceable test case or a debuggable backtrace, I guess 
it's better for now to avoid crashing and look into it later.