Use 'scoped' to avoid redundant check.

Author: bgrainger

src/MySqlConnector/Utilities/Utility.cs

@@ -138,12 +138,11 @@ public static RSAParameters GetRsaParameters(string key)
 		var keyChars = key.AsSpan()[keyStartIndex..keyEndIndex];
 		var bufferLength = keyChars.Length / 4 * 3;
 		byte[]? buffer = null;
-		Span<byte> bufferBytes = bufferLength <= 1024 ? stackalloc byte[bufferLength] : default;
+		scoped Span<byte> bufferBytes;
 		if (bufferLength > 1024)
-		{
-			buffer = ArrayPool<byte>.Shared.Rent(bufferLength);
-			bufferBytes = buffer.AsSpan();
-		}
+			bufferBytes = buffer = ArrayPool<byte>.Shared.Rent(bufferLength);
+		else
+			 bufferBytes = stackalloc byte[bufferLength];
 		try
 		{
 			if (!System.Convert.TryFromBase64Chars(keyChars, bufferBytes, out var bytesWritten))