Use try/finally block to unsubscribe event handlers

Author: TheCodeTraveler

src/CommunityToolkit.Maui.Camera/Views/CameraView.shared.cs

@@ -214,26 +214,22 @@ public async Task<Stream> CaptureImage(CancellationToken token)
 		MediaCaptured += HandleMediaCaptured;
 		MediaCaptureFailed += HandleMediaCapturedFailed;
 
-		await Handler.CameraManager.TakePicture(token);
-
-		var stream = await mediaStreamTCS.Task.WaitAsync(token);
-		return stream;
-
-		void HandleMediaCaptured(object? sender, MediaCapturedEventArgs e)
+		try
 		{
-			MediaCaptured -= HandleMediaCaptured;
-			MediaCaptureFailed -= HandleMediaCapturedFailed;
+			await Handler.CameraManager.TakePicture(token);
 
-			mediaStreamTCS.SetResult(e.Media);
+			var stream = await mediaStreamTCS.Task.WaitAsync(token);
+			return stream;
 		}
-
-		void HandleMediaCapturedFailed(object? sender, MediaCaptureFailedEventArgs e)
+		finally
 		{
 			MediaCaptured -= HandleMediaCaptured;
 			MediaCaptureFailed -= HandleMediaCapturedFailed;
-
-			mediaStreamTCS.SetException(new CameraException(e.FailureReason));
 		}
+
+		void HandleMediaCaptured(object? sender, MediaCapturedEventArgs e) => mediaStreamTCS.SetResult(e.Media);
+
+		void HandleMediaCapturedFailed(object? sender, MediaCaptureFailedEventArgs e) => mediaStreamTCS.SetException(new CameraException(e.FailureReason));
 	}
 
 	/// <inheritdoc cref="ICameraView.StartCameraPreview"/>