Update to get dev-server working again after jsonsign & Go changes.

config/dev-server-config.json

@@ -28,7 +28,6 @@
       "/sighelper/": {
           "handler": "jsonsign",
           "handlerArgs": {
-              "keyRing": ["_env", "${CAMLI_KEY_RING}"],
               "secretRing": ["_env", "${CAMLI_SECRET_RING}"],
               "keyId": "26F5ABDA"
           }

lib/go/camli/blobserver/localdisk/enumerate.go

@@ -53,6 +53,9 @@ func readBlobs(opts readBlobRequest) os.Error {
 	}
 	defer dir.Close()
 	names, err := dir.Readdirnames(32768)
+	if err == os.EOF {
+		return nil
+	}
 	if err != nil {
 		return &enumerateError{"localdisk: readdirnames of " + dirFullPath, err}
 	}