Fixes angular issue

When closing a wallet that was opened in another window.

```
## DISCONNECTING copayBundle.js:2023
Error: [$rootScope:inprog] http://errors.angularjs.org/1.2.21/$rootScope/inprog?p0=%24digest
```

Fixes #1126 

Note: I tested with many errors to check if this commented line affect another behavior. It seems to work fine. If you consider it 's OK, I will remove the commented line.