p2p: session.getRangeByHeight should change condition check from == to >= given that the number of headers being appended is more than 1 at a time

[odeke-em]

go-header/p2p/session.go

Line 117 in 18f0eb1

if uint64(len(headers)) == amount {

should be changed to >= from == given that right above you added what could be more than just 1 header.

Kindly cc-ing @Wondertan @walldiss

[walldiss]

Right now, it's impossible for len(headers) to exceed amount, but you're absolutely right - it makes sense to update the check to >= for better safety.