hls: fix crash when muxer is being recreated, improve performance

[aler9]

No description provided.

[codecov]

Codecov Report

Attention: 181 lines in your changes are missing coverage. Please review.

Comparison is base (b6eaa6b) 53.65% compared to head (d96ca4c) 53.59%.

Files	Patch %	Lines
internal/servers/hls/muxer_instance.go	40.32%	101 Missing and 10 partials ⚠️
internal/servers/hls/muxer.go	51.80%	40 Missing ⚠️
internal/servers/srt/conn.go	0.00%	22 Missing ⚠️
internal/core/path.go	75.00%	3 Missing ⚠️
internal/core/path_manager.go	70.00%	3 Missing ⚠️
internal/servers/hls/http_server.go	81.81%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3017      +/-   ##
==========================================
- Coverage   53.65%   53.59%   -0.06%     
==========================================
  Files         133      137       +4     
  Lines       13064    13698     +634     
==========================================
+ Hits         7010     7342     +332     
- Misses       5486     5765     +279     
- Partials      568      591      +23     

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[github-actions]

This issue is mentioned in release v1.6.0 🚀
Check out the entire changelog by clicking here