Only redirect to nextPath if it exists

Author: bfin

lib/components/pages/Login.js

@@ -28,7 +28,10 @@ export default class Login extends React.Component {
     const { history, store } = this.context
     const { location } = this.props
 
-    const nextPath = location.state.nextPathname || '/account'
+    let nextPath = '/account'
+    if (location.state && location.state.nextPath)
+      nextPath = location.state.nextPath
+
     store.dispatch(actions.login(this.state, () => {
       // redirect to a secure page
       history.pushState({}, nextPath)