fix(document): don't skip pointCut if save not defined (like in brows…

…er doc)

Fix #4841

lib/document.js

@@ -1969,7 +1969,7 @@ Document.prototype.$__registerHooksFromSchema = function() {
     // this is so we can wrap everything into a promise;
     var newName = ('$__original_' + pointCut);
     if (!_this[pointCut]) {
-      return;
+      continue;
     }
     _this[newName] = _this[pointCut];
     _this[pointCut] = (function(_newName) {