patch 9.0.0824: crash when using win_move_separator() in other tab page Commit: https://github.com/vim/vim/commit/873f41a0187e81a22aa4622fbf938de72a54abba Author: zeertzjq <zeertzjq@outlook.com> Date: Tue Nov 1 11:44:43 2022 +0000 patch 9.0.0824: crash when using win_move_separator() in other tab page Problem: Crash when using win_move_separator() in other tab page. Solution: Check for valid window in current tab page. (closes #11479, closes #11427)

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