cmd/godoc: skip TestWeb if waitForServerReady fails

This test fails frequently, with a failure mode that is difficult to
diagnose. (golang/go#50436 may help with that eventually.)

For now, skip the test to reduce noise on the build dashboard.

For golang/go#50014.

Change-Id: I182be5c705846631c983bd5b6c51ab90b71a216a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/403534
Reviewed-by: Dmitri Shuralyov <[email protected]>
Run-TryBot: Bryan Mills <[email protected]>
Auto-Submit: Bryan Mills <[email protected]>
gopls-CI: kokoro <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>

cmd/godoc/godoc_test.go

@@ -83,7 +83,7 @@ func waitForServerReady(t *testing.T, cmd *exec.Cmd, addr string) {
 		15*time.Second,
 		false)
 	if err := <-ch; err != nil {
-		t.Fatal(err)
+		t.Skipf("skipping due to https://go.dev/issue/50014: %v", err)
 	}
 }