Remove redundant len check around loop

[Juneezee]

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.

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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

[techknowlogick]

for other reviewers: I found viewing with whitespace changes hidden helpful.

[Juneezee]

@techknowlogick Yup!

[lng2020]

Should remove the comment if present in search query? Or just delete the whole redundant sentence if the code is easy to understand.