Fix exception introduced by new logging.

Author: bgrainger

src/MySqlConnector/MySqlBatch.cs

@@ -151,7 +151,7 @@ public void Prepare()
 
 		public Task PrepareAsync(CancellationToken cancellationToken = default) => PrepareAsync(AsyncIOBehavior, cancellationToken);
 
-		public void Cancel() => Connection?.Cancel(this);
+		public void Cancel() => Connection?.Cancel(this, m_commandId, true);
 
 		public void Dispose()
 		{

src/MySqlConnector/MySqlCommand.cs

@@ -95,11 +95,7 @@ private MySqlCommand(MySqlCommand other)
 		public new MySqlParameter CreateParameter() => (MySqlParameter) base.CreateParameter();
 
 		/// <inheritdoc/>
-		public override void Cancel()
-		{
-			Log.Info("CommandId {0} for Session{1} has been canceled via Cancel().", m_commandId, Connection?.Session.Id);
-			Connection?.Cancel(this);
-		}
+		public override void Cancel() => Connection?.Cancel(this, m_commandId, true);
 
 		/// <inheritdoc/>
 		public override int ExecuteNonQuery() => ExecuteNonQueryAsync(IOBehavior.Synchronous, CancellationToken.None).GetAwaiter().GetResult();
@@ -392,9 +388,8 @@ void ICancellableCommand.SetTimeout(int milliseconds)
 
 		private void CancelCommandForTimeout()
 		{
-			Log.Info("CommandId {0} for Session{1} has been canceled via command timeout.", m_commandId, Connection?.Session.Id);
 			Volatile.Write(ref m_commandTimedOut, true);
-			Connection?.Cancel(this);
+			Connection?.Cancel(this, m_commandId, false);
 		}
 
 		private bool IsValid([NotNullWhen(false)] out Exception? exception)

src/MySqlConnector/MySqlConnection.cs

@@ -694,10 +694,15 @@ internal ServerSession Session
 
 		internal void SetSessionFailed(Exception exception) => m_session!.SetFailed(exception);
 
-		internal void Cancel(ICancellableCommand command)
+		internal void Cancel(ICancellableCommand command, int commandId, bool isCancel)
 		{
 			if (m_session is null || State != ConnectionState.Open || !m_session.TryStartCancel(command))
+			{
+				Log.Info("Ignoring cancellation for closed connection or invalid CommandId {0}", commandId);
 				return;
+			}
+
+			Log.Info("CommandId {0} for Session{1} has been canceled via {2}.", commandId, m_session.Id, isCancel ? "Cancel()" : "command timeout");
 
 			try
 			{
@@ -718,7 +723,7 @@ internal void Cancel(ICancellableCommand command)
 			catch (MySqlException ex)
 			{
 				// cancelling the query failed; setting the state back to 'Querying' will allow another call to 'Cancel' to try again
-				Log.Warn(ex, "Session{0} cancelling command {1} failed", m_session!.Id, command.CommandId);
+				Log.Warn(ex, "Session{0} cancelling CommandId {1} failed", m_session!.Id, command.CommandId);
 				m_session.AbortCancel(command);
 			}
 		}