[Filebeat] udp input - unneccessary multiplication by KiB

[andrewkroh]

beats/filebeat/inputsource/udp/server.go

Lines 65 to 67 in 56a17e0

	socketSize := int(u.config.ReadBuffer) * humanize.KiByte
	if socketSize != 0 {
	if err := listener.SetReadBuffer(int(u.config.ReadBuffer)); err != nil {

There is no need to multiple the config.ReadBuffer by the size of KiB. The value is already converted into the user's specified unit type when the config is unmarshaled. And secondly, the resulting value is only used in the context of checking if it is non-zero.

So just remove the entire declaration of the socketSize variable in this code.

[elasticmachine]

Pinging @elastic/sec-deployment-and-devices (Team:Security-Deployment and Devices)