rtsp: fix memory leak when closing sessions (#4964) (#4678)

[aler9]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 56.65%. Comparing base (a1f3631) to head (9ccc0f2).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4967      +/-   ##
==========================================
+ Coverage   56.60%   56.65%   +0.04%     
==========================================
  Files         215      215              
  Lines       23574    23575       +1     
==========================================
+ Hits        13345    13357      +12     
+ Misses       9246     9236      -10     
+ Partials      983      982       -1     

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[github-actions]

This issue is mentioned in release v1.15.0 🚀
Check out the entire changelog by clicking here