maintner: suppress spurious error message
Currently maintnerd prints
2017/06/17 15:00:16 Unknown error type <nil>: <nil>
if it successfully downloads a file. It shouldn't log if there was no
error.
Change-Id: I01c4f2bde616d709d5c081219f9c123d6ea6a678
Reviewed-on: https://go-review.googlesource.com/46007
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/maintner/netsource.go b/maintner/netsource.go
index 5c4d28f..356743f 100644
--- a/maintner/netsource.go
+++ b/maintner/netsource.go
@@ -74,6 +74,9 @@
// isNoInternetError reports whether the provided error is because there's no
// network connectivity.
func isNoInternetError(err error) bool {
+ if err == nil {
+ return false
+ }
switch err := err.(type) {
case *url.Error:
return isNoInternetError(err.Err)
