Subject: bug#30320: 26.0.91; Crash when using lsp-ui-doc-mode

From: Jake Goulding <[email-masked]>
Date: Sat, 3 Feb 2018 11:10:12 -0500

Both of those attempts had the same crash with the same details:

```
(lldb) p (tty)->Wcm->cm_magicwrap
(bool_bf) $0 = true
(lldb) p (tty)->Wcm->cm_curY
(int) $1 = 2
(lldb) p (tty)->Wcm->cm_rows
(int) $2 = 3
```