It is advised to eliminate any instances of _srs_rtc_manager that occur
multiple times.
---------
Co-authored-by: john <hondaxiao@tencent.com>
Co-authored-by: chundonglinlin <chundonglinlin@163.com>
* v6.0, 2023-07-26, Merge [#3699](https://github.com/ossrs/srs/pull/3699): Bugfix: Eliminate the redundant declaration of the _srs_rtc_manager variable.. v6.0.61 (#3699)
* v6.0, 2023-07-21, Merge [#3695](https://github.com/ossrs/srs/pull/3695): API: Fix HTTPS callback issue using SNI in TLS client handshake. v6.0.61 (#3695)
* v6.0, 2023-07-18, Merge [#3515](https://github.com/ossrs/srs/pull/3515): WebRTC: Support config the bitrate of transcoding AAC to Opus. v6.0.60 (#3515)
* v5.0, 2023-07-26, Merge [#3699](https://github.com/ossrs/srs/pull/3699): Bugfix: Eliminate the redundant declaration of the _srs_rtc_manager variable.. v5.0.168 (#3699)
* v5.0, 2023-07-21, Merge [#3695](https://github.com/ossrs/srs/pull/3695): API: Fix HTTPS callback issue using SNI in TLS client handshake. v5.0.168 (#3695)
* v5.0, 2023-07-18, Merge [#3515](https://github.com/ossrs/srs/pull/3515): WebRTC: Support config the bitrate of transcoding AAC to Opus. v5.0.167 (#3515)