Fix blocking on PHP 7.0-7.1 ZTS

[cataphract]

Description

Reviewer checklist

• Test coverage seems ok.
• Appropriate labels assigned.

APPSEC-51448

[Anilm3]

LGTM if the tests pass...

[codecov-commenter]

Codecov Report

Merging #2502 (6965136) into master (679da8e) will decrease coverage by 1.79%.
The diff coverage is 56.25%.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2502      +/-   ##
============================================
- Coverage     78.71%   76.92%   -1.79%     
  Complexity      267      267              
============================================
  Files           110      136      +26     
  Lines         13191    17018    +3827     
  Branches          0      903     +903     
============================================
+ Hits          10383    13091    +2708     
- Misses         2808     3471     +663     
- Partials          0      456     +456     

Flag	Coverage Δ
appsec-extension	70.76% <56.25%> (?)
tracer-extension	78.66% <ø> (ø)
tracer-integrations	79.49% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
appsec/src/extension/commands/request_exec.c	100.00% <100.00%> (ø)
appsec/src/extension/commands/request_init.c	88.13% <100.00%> (ø)
appsec/src/extension/commands/request_shutdown.c	76.38% <100.00%> (ø)
appsec/src/extension/commands_helpers.c	68.91% <80.00%> (ø)
appsec/src/extension/request_abort.c	72.02% <25.00%> (ø)

... and 21 files with indirect coverage changes

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