be sure to delete the file handler also in case of errorInCmd

Author: Michiel de Hoon

Modules/_tkinter.c

@@ -3405,6 +3405,7 @@ EventHook(void)
         PyErr_SetRaisedException(excInCmd);
         excInCmd = NULL;
         PyErr_Print();
+        if (!stdin_ready) Tcl_DeleteFileHandler(tfile);
     }
     PyEval_SaveThread();
     return 0;