fix(Crash): Fix crash when crashing. Be sure we can get the message and tell the user to report the issue.

Fixes SOUNDSWITCH-CH

Author: Belphemur

SoundSwitch/Program.cs

@@ -223,7 +223,8 @@ private static void HandleException(Exception exception)
 
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             var result = DialogResult.None;
-            _synchronizationContext.Send(state =>
+            var syncContext = _synchronizationContext ?? SynchronizationContext.Current;
+            syncContext.Send(state =>
             {
                 result = MessageBox.Show(message, $@"{Application.ProductName} crashed...", MessageBoxButtons.YesNo,
                     MessageBoxIcon.Error);