Documentation Request for deferring Close()

[Zamiell]

Hello, and thanks for the linter.

sqlclosecheck complains that rows.Close() should use defer. Can you explain why this is? For example, I don't see a difference between:

rows := db.Query("SELECT username FROM users")
for rows.Next() {
	// Do something
}
rows.Close()
return

and

rows := db.Query("SELECT username FROM users")
for rows.Next() {
	// Do something
}
defer rows.Close()
return

Putting defer here just seems confusing / a mistake / superfluous.