Don't print extra prompt on cancellation of ReadLine

Author: andyleejordan

src/PowerShellEditorServices/Services/PowerShell/Host/PsesInternalHost.cs

@@ -617,17 +617,15 @@ private void DoOneRepl(CancellationToken cancellationToken)
 
                 // If the user input was empty it's because:
                 //  - the user provided no input
-                //  - the readline task was canceled
-                //  - CtrlC was sent to readline (which does not propagate a cancellation)
+                //  - the ReadLine task was canceled
+                //  - CtrlC was sent to ReadLine (which does not propagate a cancellation)
                 //
-                // In any event there's nothing to run in PowerShell, so we just loop back to the prompt again.
-                // However, we must distinguish the last two scenarios, since PSRL will not print a new line in those cases.
-                if (string.IsNullOrEmpty(userInput))
+                // In any event there's nothing to run in PowerShell, so we just loop back to the
+                // prompt again. However, PSReadLine will not print a newline for CtrlC, so we print
+                // one, but we do not want to print one if the ReadLine task was canceled.
+                if (string.IsNullOrEmpty(userInput) && LastKeyWasCtrlC())
                 {
-                    if (cancellationToken.IsCancellationRequested || LastKeyWasCtrlC())
-                    {
-                        UI.WriteLine();
-                    }
+                    UI.WriteLine();
                     return;
                 }