find: Fix -execdir + working incorrectly for the root path

[milkory]

This command should work now.

find / -maxdepth 0 -execdir echo {} +

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 87.77%. Comparing base (a571de6) to head (d02dcbc).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #533      +/-   ##
==========================================
+ Coverage   87.70%   87.77%   +0.06%     
==========================================
  Files          31       31              
  Lines        6887     6926      +39     
  Branches      324      324              
==========================================
+ Hits         6040     6079      +39     
  Misses        616      616              
  Partials      231      231              

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[sylvestre]

Could you please add a test to make sure we don't regress? Thanks

[milkory]

Yes, I'll add some later.

[milkory]

I have added a test on process_dir and another test for execdir + in root directory.