fix(tabpage): focusing a tab while closing it, fails assert #41475

Problem:
If an autocommand handler focuses the tab page we're closing during a
`:tabonly` (with some conditions), we hit an assert failure in
`win_close_othertab()`.

For this to occur, we need:
- `nvim_buf_delete()` to trigger `close_windows()` (as is done in
	`cmdwin.lua`'s `_cleanup()`)
- `close_windows()` then calls `win_close_othertab()`, removing the
	window (`win_free_mem()`)
- then in the caller, `tabpage_close_other()`, the loop continues (we
	don't detect `tp_lastwin == wp` since we've unlinked the window)
- the loop assumes that `curtab != tp`

but we've refocused `curtab` so the `ex_win_close()` call passes `tp` as
`curtab`, causing the assert to fail

Solution:
Detect the focus of `curtab` and abort closing the tab.

0 files changed, 0 insertions, 0 deletions