Fix adding displays in mustash.

services/ui/ws/display_manager.cc

Index: services/ui/ws/display_manager.cc
diff --git a/services/ui/ws/display_manager.cc b/services/ui/ws/display_manager.cc
index 52b1ae1801010471305e1b6c6f09482676c2a02f..5481c5e7227d04c54bc76aeceb33d11f0ca18e46 100644
--- a/services/ui/ws/display_manager.cc
+++ b/services/ui/ws/display_manager.cc
@@ -146,8 +146,7 @@ void DisplayManager::OnDisplayAcceleratedWidgetAvailable(Display* display) {
   const bool is_first_display = displays_.empty();
   displays_.insert(display);
   pending_displays_.erase(display);
-  if (is_first_display)
-    window_server_->OnDisplayReady(display, is_first_display);
+  window_server_->OnDisplayReady(display, is_first_display);
 }
 
 void DisplayManager::OnActiveUserIdChanged(const UserId& previously_active_id,