Would you rather spend 5 minutes to read a cover letter and code, or just read the diff see word_a has been changed to word_b in comments? Trivial typo or cosme

Would you rather spend 5 minutes to read a cover letter and code, or just read the diff see word_a has been changed to word_b in comments? Trivial typo or cosmetic changes should stay small, and can be approved in a few seconds.