[5.1]Fix bug #5547

[NathanFreeman]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 70.00000% with 12 lines in your changes missing coverage. Please review.

Project coverage is 71.67%. Comparing base (84d9b51) to head (9105da7).
Report is 3 commits behind head on 5.1.x.

Files with missing lines	Patch %	Lines
include/swoole_async.h	16.66%	10 Missing ⚠️
src/network/dns.cc	83.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            5.1.x    #5586      +/-   ##
==========================================
- Coverage   71.69%   71.67%   -0.02%     
==========================================
  Files         105      105              
  Lines       16136    16137       +1     
  Branches     2972     2972              
==========================================
- Hits        11569    11567       -2     
- Misses       4512     4514       +2     
- Partials       55       56       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.