os: fix another case where RemoveAll should return nil

This hopefully fixes issue 8793.

Fixes #8793

LGTM=iant
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/150860046

diff --git a/src/os/path.go b/src/os/path.go
index 6cc69403b612372f140af2ea15270c9de1e3faac..b1a90b3e5258b78bbac86342ca8615ac42374afb 100644 (file)
--- a/src/os/path.go
+++ b/src/os/path.go
@@ -86,6 +86,9 @@ func RemoveAll(path string) error {
        // Directory.
        fd, err := Open(path)
        if err != nil {
+               if IsNotExist(err) {
+                       return nil
+               }
                return err
        }