Fix Bug 927860 - Don't die if login server fails to return user info.

I fixed indent issues at the same time, my changes are just:

```javascript
76 	+      // If we get a 503, or otherwise fail to get a body back from the login
77 	+      // server, treat that as an error and bail now.
78 	+      if ( !body ) {
79 	+        return callback( "Error requesting user, server returned nothing." );
80 	+      } 
```