set _closed to true

Author: vkarpov15

lib/cursor/aggregationCursor.js

@@ -218,7 +218,7 @@ AggregationCursor.prototype._destroy = function _destroy(_err, callback) {
   waitForCursor
     .then(() => this.cursor.close())
     .then(() => {
-      this._closed = false;
+      this._closed = true;
       callback();
     })
     .catch(error => {

lib/cursor/queryCursor.js

@@ -262,7 +262,7 @@ QueryCursor.prototype._destroy = function _destroy(_err, callback) {
       this.cursor.close();
     })
     .then(() => {
-      this._closed = false;
+      this._closed = true;
       callback();
     })
     .catch(error => {