Fix remarks emitted by IAR compiler

[aggarg]

Description

Fix remarks emitted by IAR compiler

Test Steps

Built and tested locally.

Checklist:

• I have tested my changes. No regression in existing tests.
• I have modified and/or added unit-tests to cover the code changes in this Pull Request.

Related Issue

#757

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[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.08% 🎉

Comparison is base (cdd3678) 94.27% compared to head (0804936) 94.35%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #763      +/-   ##
==========================================
+ Coverage   94.27%   94.35%   +0.08%     
==========================================
  Files           6        6              
  Lines        2446     2446              
  Branches      598      598              
==========================================
+ Hits         2306     2308       +2     
+ Misses         87       85       -2     
  Partials       53       53              

Flag	Coverage Δ
unittests	94.35% <100.00%> (+0.08%)	⬆️

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

Files Changed	Coverage Δ
tasks.c	94.83% <100.00%> (ø)
timers.c	98.76% <100.00%> (ø)

... and 1 file with indirect coverage changes

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