From 8c48e37c4f732b16610ff2aa76fb2fa74d4f7798 Mon Sep 17 00:00:00 2001
From: McSchneidar <mcschneidar@atomicmail.io>
Date: Sun, 22 Feb 2026 18:57:23 +0100
Subject: [PATCH] Prevent crash on program close (null stream fix) (#838)

* Fix Access Violation

* Fix AccessViolation
---
 Vocaluxe/Lib/Sound/CPortAudioHandle.cs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Vocaluxe/Lib/Sound/CPortAudioHandle.cs b/Vocaluxe/Lib/Sound/CPortAudioHandle.cs
index a8fe8e89..d8ce237e 100644
--- a/Vocaluxe/Lib/Sound/CPortAudioHandle.cs
+++ b/Vocaluxe/Lib/Sound/CPortAudioHandle.cs
@@ -176,6 +176,11 @@ namespace Vocaluxe.Lib.Sound
 
                 try
                 {
+                    if (stream == IntPtr.Zero)
+                    {
+                         CLog.Debug("Stream is null, skipping close.");
+                         return;
+                    }
                     PortAudio.Pa_CloseStream(stream);
                 }
                 catch (Exception ex)
@@ -235,4 +240,4 @@ namespace Vocaluxe.Lib.Sound
             return selectedHostApi;
         }
     }
-}
\ No newline at end of file
+}