Fix minor memory leak in participant inbuf of audiobridge plugin

[JeckLabs]

According to glib documentation g_list_remove_link will not free element itself, which cause a minor memory leak in the audio bridge plugin. Probably it would be better to replace it with g_list_delete_link.

[lminiero]

Have you verified if this is indeed leaking memory? It does make sense looking at the docs, but my libasan setup doesn't seem to be catching those when I close Janus and it cleans up.

[atoppi]

glist links seems to be handled with memory slices, so maybe that could explain why libasan is not catching those leaks

[lminiero]

Ah that would make sense. I'll make a couple of quick tests, then, and merge if I don't spot anything weird 👍

[JeckLabs]

@lminiero yes, this is how I found it in the first place. I'm using Valgrind and it shows a leak in glib slice allocator. I may try to reproduce if it helps.

[lminiero]

No need! Sounds good to me, thanks for spotting this: merging 👍