[headless] Fix camera possible leak.

[dlyr]

Pull Request Desription

Please check if the PR fulfills these requirements

• [x] The commit message follows our guidelines
• [x] Tests for the changes have been added (for bug fixes / features)
• [x] Docs have been added / updated (for bug fixes / features)

PR details

• What kind of change does this PR introduce?

  • [x] bug fix

• What is the current behavior? (You can also link to an open issue here)

Neked new is used for camera in CLI viewer, use unique_ptr instead. Also fix 0 thread queue.

[codecov[bot]]

Codecov Report

Merging #1073 (2e6efd4) into release-candidate (54aef71) will decrease coverage by 0.02%. Report is 1 commits behind head on release-candidate. The diff coverage is 25.00%.

:exclamation: Current head 2e6efd4 differs from pull request most recent head fb66f6a. Consider uploading reports for the commit fb66f6a to get more accurate results

@@                  Coverage Diff                  @@
##           release-candidate    #1073      +/-   ##
=====================================================
- Coverage              45.72%   45.71%   -0.02%     
=====================================================
  Files                    312      312              
  Lines                  23096    23106      +10     
=====================================================
+ Hits                   10561    10563       +2     
- Misses                 12535    12543       +8     

Files	Coverage Δ
src/Headless/CLIViewer.hpp	100.00% <ø> (ø)
src/Headless/CLIViewer.cpp	53.17% <25.00%> (-2.86%)	:arrow_down: