net: silence another epoll print

R=golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/5752048

diff --git a/src/pkg/net/fd_linux.go b/src/pkg/net/fd_linux.go
index a1d62acc7840dc68127ed1dabb9c07f7028ea6ef..085e423072aa3c6d2912979b2295b87bdc8efc48 100644 (file)
--- a/src/pkg/net/fd_linux.go
+++ b/src/pkg/net/fd_linux.go
@@ -84,7 +84,8 @@ func (p *pollster) StopWaiting(fd int, bits uint) {
 
        events, already := p.events[fd]
        if !already {
-               print("Epoll unexpected fd=", fd, "\n")
+               // The fd returned by the kernel may have been
+               // cancelled already; return silently.
                return
        }