Fix promiseutil.periodicNotify to actually resolve with correct values.

lib/util/promiseutil.js

@@ -8,12 +8,12 @@ module.exports.periodicNotify = function(promise, interval) {
     resolver.progress()
   }
 
-  function resolve() {
-    resolver.resolve()
+  function resolve(value) {
+    resolver.resolve(value)
   }
 
-  function reject() {
-    resolver.reject()
+  function reject(err) {
+    resolver.reject(err)
   }
 
   promise.then(resolve, reject)