patch 9.0.2118: [security]: avoid double-free in get_style_font_variants Commit: https://github.com/vim/vim/commit/a5218a7330cb14ddd9afa323ab03f4334e6a77a0 Author: Christian Brabandt <cb@256bit.org> Date: Sun Nov 19 16:25:45 2023 +0100 patch 9.0.2118: [security]: avoid double-free in get_style_font_variants Problem: [security]: avoid double-free Solution: Only fee plain_font, when it is not the same as bold_font When plain_font == bold_font and bold_font is not NULL, we may end up trying to free bold_font again, which already has been freed a few lines above. So only free bold_font, when the condition gui.font_can_bold is true, which means that bold_font is not pointing to plain_font (so it needs to be freed separately). Signed-off-by: Christian Brabandt <cb@256bit.org>