Fixed app starting, when user just closes the loading screen

Closes #21

I18N Commander/UI WinForms/Components/LoaderStart.cs

@@ -13,10 +13,10 @@ public partial class LoaderStart : UserControl
         this.InitializeComponent();
     }
 
-    private static RegistryKey I18NCommanderKey => Registry.CurrentUser.OpenSubKey("Software", RegistryKeyPermissionCheck.ReadWriteSubTree)!.CreateSubKey("I18N Commander", RegistryKeyPermissionCheck.ReadWriteSubTree);
-
     #region Recent Projects
 
+    private static RegistryKey I18NCommanderKey => Registry.CurrentUser.OpenSubKey("Software", RegistryKeyPermissionCheck.ReadWriteSubTree)!.CreateSubKey("I18N Commander", RegistryKeyPermissionCheck.ReadWriteSubTree);
+    
     /// <summary>
     /// Gets or sets the list of recent projects without any extras e.g. it does not prune the list of projects.
     /// </summary>

I18N Commander/UI WinForms/Loader.cs

@@ -12,6 +12,7 @@ public partial class Loader : Form
     private void loaderStart_LoadProject(object sender, string projectFilePath)
     {
         this.DataFile = projectFilePath;
+        this.DialogResult = DialogResult.OK;
         this.Close();
     }
 }

I18N Commander/UI WinForms/Program.cs

@@ -21,6 +21,10 @@ internal static class Program
         var loader = new Loader();
         Application.Run(loader);
 
+        // Check, if the user closes the loader screen:
+        if (loader.DialogResult != DialogResult.OK)
+            return;
+        
         //
         // Create the DI system
         //