Merge pull request #12 from totalretribution/crashfix

Author: totalretribution

src/SshAgentEcho.Gui/Program.cs

@@ -21,8 +21,16 @@ public static void Main(string[] args) {
             return;
         }
 
-        BuildAvaloniaApp()
-            .StartWithClassicDesktopLifetime(args);
+        try {
+            BuildAvaloniaApp()
+                .StartWithClassicDesktopLifetime(args);
+        } catch (NullReferenceException ex) when (ex.StackTrace?.Contains("DBusMenu") == true || ex.StackTrace?.Contains("Tmds.DBus") == true) {
+            Console.WriteLine($"Suppressing DBus shutdown error: {ex.Message}");
+        } catch (Exception ex) {
+            Console.WriteLine($"Unhandled exception: {ex}");
+        } finally {
+            _mutex.ReleaseMutex();
+        }
     }
 
     // Avalonia configuration, don't remove; also used by visual designer.