patch 8.2.0237: crash when setting 'wincolor' on finished terminal window Commit: https://github.com/vim/vim/commit/7ba3b91e0385c848c773e2f2d803db01730e7786 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Feb 10 20:34:04 2020 +0100 patch 8.2.0237: crash when setting 'wincolor' on finished terminal window Problem: Crash when setting 'wincolor' on finished terminal window. (Bakudankun) Solution: Check that the vterm is not NULL. (Yasuhiro Matsumoto, closes #5607, closes #5610)

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