[SDK] Fix memory leak in TlsRandomNumberGenerator() constructor

[hongweipeng]

Fixes #2660

Changes

Please provide a brief description of the changes here.

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: hongweipeng / name: Weipeng Hong (6b44492)
• ✅ login: marcalff / name: Marc Alff (1f404a3)

[owent]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.60%. Comparing base (497eaf4) to head (1f404a3).
Report is 108 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2661      +/-   ##
==========================================
+ Coverage   87.12%   87.60%   +0.49%     
==========================================
  Files         200      190      -10     
  Lines        6109     5870     -239     
==========================================
- Hits         5322     5142     -180     
+ Misses        787      728      -59     

Files	Coverage Δ
sdk/src/common/random.cc	96.00% <100.00%> (+0.17%)	⬆️

... and 121 files with indirect coverage changes