Fix SettingWindow Position when first launch

Author: onesounds

Flow.Launcher/SettingWindow.xaml.cs

@@ -446,7 +446,7 @@ private void PluginStore_OnKeyDown(object sender, KeyEventArgs e)
 
         public void InitializePosition()
         {
-            if (settings.SettingWindowTop >= 0 && settings.SettingWindowLeft >= 0)
+            if (settings.SettingWindowTop == null)
             {
                 Top = settings.SettingWindowTop;
                 Left = settings.SettingWindowLeft;