Fix compilation after alpine container upgrade

[bwoebi]

Fixing a few -Werror false positives.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 78.49%. Comparing base (4b2f6db) to head (727100b).

Files	Patch %	Lines
zend_abstract_interface/symbols/lookup.c	50.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2811      +/-   ##
============================================
- Coverage     81.11%   78.49%   -2.63%     
  Complexity     2516     2516              
============================================
  Files           146      173      +27     
  Lines         14647    18679    +4032     
  Branches          0      975     +975     
============================================
+ Hits          11881    14662    +2781     
- Misses         2766     3480     +714     
- Partials          0      537     +537     

Flag	Coverage Δ
appsec-extension	69.12% <ø> (?)
tracer-extension	78.19% <66.66%> (-0.01%)	⬇️
tracer-php	82.27% <ø> (-0.06%)	⬇️

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

Files	Coverage Δ
zend_abstract_interface/symbols/call.c	92.63% <100.00%> (+0.04%)	⬆️
zend_abstract_interface/symbols/lookup.c	82.43% <50.00%> (-0.32%)	⬇️

... and 28 files with indirect coverage changes

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