46fe3ff6ea
The "file" chardev may call qemu_chr_open_fd() with fd_in=-1. This may cause invalid system calls, as the QIOChannel is assumed to be properly initialized later on. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>