clearSubscriptions fixed (#1886)

Author: nivida

packages/web3-shh/src/index.js

@@ -42,11 +42,8 @@ var Shh = function Shh() {
         _this.net.setProvider.apply(_this, arguments);
     };
 
-    this.clearSubscriptions = _this._requestManager.clearSubscriptions;
-
     this.net = new Net(this.currentProvider);
 
-
     [
         new Subscriptions({
             name: 'subscribe',
@@ -180,6 +177,10 @@ var Shh = function Shh() {
     });
 };
 
+Shh.prototype.clearSubscriptions = function () {
+     this._requestManager.clearSubscriptions();
+};
+
 core.addProviders(Shh);