Update save settings only when main window is closed

Source/GrasscutterTools/Forms/FormDropEditor.cs

@@ -98,7 +98,6 @@ namespace GrasscutterTools.Forms
         {
             // 保存文件路径
             Settings.Default.DropJsonPath = TxtDropJsonPath.Text;
-            Settings.Default.Save();
 
             base.OnFormClosed(e);
         }

Source/GrasscutterTools/Forms/FormGachaBannersEditor3.cs

@@ -91,7 +91,6 @@ namespace GrasscutterTools.Forms
         {
             // 保存文件路径
             Settings.Default.BannersJsonPath = TxtBannersJsonPath.Text;
-            Settings.Default.Save();
 
             base.OnFormClosed(e);
         }

Source/GrasscutterTools/Forms/FormMain.cs

@@ -172,7 +172,7 @@ namespace GrasscutterTools.Forms
                 else
                     Settings.Default.MainFormSize = Size;
 
-                // 保存默认设置
+                // 保存设置
                 Settings.Default.Save();
             }
             catch (Exception ex)

Source/GrasscutterTools/Forms/FormShopEditor.cs

@@ -80,7 +80,6 @@ namespace GrasscutterTools.Forms
         protected override void OnFormClosed(FormClosedEventArgs e)
         {
             Settings.Default.ShopJsonPath = TxtShopJsonPath.Text;
-            Settings.Default.Save();
 
             base.OnFormClosed(e);
         }

Source/GrasscutterTools/Forms/FormTextMapBrowser.cs

@@ -57,7 +57,6 @@ namespace GrasscutterTools.Forms
                 if (Settings.Default.ResourcesDirPath != resourcesDirPath)
                 {
                     Settings.Default.ResourcesDirPath = resourcesDirPath;
-                    Settings.Default.Save();
                 }
 
                 CmbLanguage.Items.Clear();
@@ -104,7 +103,6 @@ namespace GrasscutterTools.Forms
 
                 GenLines();
                 Settings.Default.TextMapFileName = CmbLanguage.Text;
-                Settings.Default.Save();
             }
             catch (Exception ex)
             {