daemon/parsePsOutput: minor optimisation

It does not make sense to keep looking for PID once
we found it, so let's give it a break.

The side effect of this patch is, if there's more than one column
titled "PID", the last (rightmost) column was used before, and now
the first (leftmost) column is used. Should make no practical
difference whatsoever.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Upstream-commit: 654a7625fc9f0b7b04da0e0e4d151af04a65cc7f
Component: engine

components/engine/daemon/top_unix.go

@@ -70,6 +70,7 @@ func parsePSOutput(output []byte, procs []uint32) (*container.ContainerTopOKBody
 	for i, name := range procList.Titles {
 		if name == "PID" {
 			pidIndex = i
+			break
 		}
 	}
 	if pidIndex == -1 {