Fix unreachable code warning in tests

[ashtum]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.10%. Comparing base (0078272) to head (9ee18ff).
Report is 3 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2944      +/-   ##
===========================================
- Coverage    93.13%   93.10%   -0.03%     
===========================================
  Files          177      177              
  Lines        13656    13656              
===========================================
- Hits         12718    12714       -4     
- Misses         938      942       +4     

Files with missing lines	Coverage Δ
include/boost/beast/core/impl/buffers_cat.hpp	98.42% <100.00%> (ø)

... and 1 file with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 0078272...9ee18ff. Read the comment docs.