patch 9.0.1512: inserting lines when scrolling with 'smoothscroll' set Commit: https://github.com/vim/vim/commit/c8502f9b880b6d23baa4f9d28b60e1ceb442e35f Author: Luuk van Baal <luukvbaal@gmail.com> Date: Sat May 6 12:40:15 2023 +0100 patch 9.0.1512: inserting lines when scrolling with 'smoothscroll' set Problem: Inserting lines when scrolling with 'smoothscroll' set. Solution: Adjust line height computation for w_skipcol. (Luuk van Baal, closes #12350)

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