Fix empty first trace item when handling trigger_error

[vjik]

Q	A
Is bugfix?	✔️
New feature?	❌
Breaks BC?	❌

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.83%. Comparing base (3418351) to head (a7db1f3).

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #161      +/-   ##
============================================
+ Coverage     80.78%   80.83%   +0.05%     
- Complexity      215      216       +1     
============================================
  Files            20       20              
  Lines           666      668       +2     
============================================
+ Hits            538      540       +2     
  Misses          128      128              

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