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This pull request is a minor code cleanup.
From the Go specification (https://go.dev/ref/spec#For_range):
> "1. For a nil slice, the number of iterations is 0."
> "3. If the map is nil, the number of iterations is 0."
`len` returns 0 if the slice or map is nil
(https://pkg.go.dev/builtin#len). Therefore, checking `len(v) > 0`
before a loop is unnecessary.
---
At the time of writing this pull request, there wasn't a lint rule that
catches these issues. The closest I could find is
https://staticcheck.dev/docs/checks/#S103
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>