patch 8.2.1913: GTK GUI: rounding for the cell height is too strict Commit: https://github.com/vim/vim/commit/70cf45810cb9be5bd17074f7fb4ee238f2c4d57b Author: Bram Moolenaar <Bram@vim.org> Date: Tue Oct 27 20:43:26 2020 +0100 patch 8.2.1913: GTK GUI: rounding for the cell height is too strict Problem: GTK GUI: rounding for the cell height is too strict. Solution: Round up above 15/16 of a pixel. (closes https://github.com/vim/vim/issues/7203)