fix coverity issues[2]

[matyhtf]

No description provided.

[codecov]

Codecov Report

Merging #3740 into master will decrease coverage by 0.00%.
The diff coverage is 28.57%.

@@            Coverage Diff             @@
##           master    #3740      +/-   ##
==========================================
- Coverage   49.00%   49.00%   -0.01%     
==========================================
  Files          69       69              
  Lines       12960    12961       +1     
==========================================
  Hits         6351     6351              
- Misses       6609     6610       +1     

Impacted Files	Coverage Δ
src/core/base.cc	54.51% <0.00%> (ø)
src/core/heap.cc	78.88% <0.00%> (ø)
src/network/socket.cc	68.96% <0.00%> (ø)
src/os/msg_queue.cc	50.00% <0.00%> (ø)
src/server/manager.cc	29.82% <0.00%> (ø)
src/server/process.cc	60.36% <0.00%> (ø)
src/server/static_handler.cc	37.41% <0.00%> (ø)
src/server/worker.cc	50.85% <23.07%> (ø)
src/network/dns.cc	86.69% <100.00%> (+0.06%)	⬆️
src/server/master.cc	52.88% <100.00%> (ø)
... and 3 more

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