From the Go docs:
"For a nil slice, the number of iterations is 0." [1]
Both `info.RootFS` and `host.clientPairs` are slices. Therefore, an
additional nil check for before the loop is unnecessary.
[1]: https://go.dev/ref/spec#For_range
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>