[lldb] Toggling the statusline with `settings set show-statusline` is broken

[JDevlieghere]

Disabling the statusline is broken. This is what it looks like after executing settings set show-statusline false:

(lldb) settings set show-statusline false
(lldb) settings set show-statusline false(lldb)

Enabling the statusline is broken too. This is what it looks after executing set set show-statusline true:

(lldb) set set show-statusline true
(lldb) set set show-statusline true(lldb)

[llvmbot]

@llvm/issue-subscribers-lldb

Author: Jonas Devlieghere (JDevlieghere)

Disabling the statusline is broken. This is what it looks like after executing `settings set show-statusline false`:

(lldb) settings set show-statusline false
(lldb) settings set show-statusline false(lldb)

Enabling the statusline is broken too. This is what it looks after executing set set show-statusline true:

(lldb) set set show-statusline true
(lldb) set set show-statusline true(lldb)