fix native-curl crash on PHP8

[matyhtf]

No description provided.

[codecov]

Codecov Report

Merging #4045 (d509d6b) into master (e678bba) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #4045   +/-   ##
=======================================
  Coverage   47.76%   47.77%           
=======================================
  Files          71       71           
  Lines       14277    14279    +2     
=======================================
+ Hits         6820     6822    +2     
  Misses       7457     7457           

Impacted Files	Coverage Δ
src/core/base.cc	75.38% <100.00%> (ø)
src/core/timer.cc	83.05% <100.00%> (+0.29%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update e678bba...d509d6b. Read the comment docs.