(fix) avoid double-appending domain in cache (fixes #3614)

UI/MainUI/SOGoRootPage.m

@@ -231,7 +231,7 @@
       // has all the logic for this, so lets use it.
       if ([domain isNotNull])
         {
-          username = [[SOGoUserManager sharedUserManager]  getUIDForEmail: username];
+          username = [[SOGoUserManager sharedUserManager] getUIDForEmail: username];
         }
 
       authCookie = [auth cookieWithUsername: username