patch 8.1.0936: may leak memory when using 'vartabstop' commit https://github.com/vim/vim/commit/55c77cf2ea9c15e1ec75d1faf702ec3c9e325271 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Feb 16 19:05:11 2019 +0100 patch 8.1.0936: may leak memory when using 'vartabstop' Problem: May leak memory when using 'vartabstop'. (Kuang-che Wu) Solution: Fix handling allocated memory for 'vartabstop'. (closes https://github.com/vim/vim/issues/3976)