grim: disable -Werror so compiler updates can't break the build

+4
+4
pkgs/tools/graphics/grim/default.nix
··· 11 11 sha256 = "sha256-lwJn1Lysv1qLauqmrduUlzdoKUrUM5uBjv+dWSsrM6w="; 12 12 }; 13 13 14 + mesonFlags = [ 15 + "-Dwerror=false" 16 + ]; 17 + 14 18 patches = [ 15 19 # Fixes build on 32bit platforms. Patch is upstream, but unreleased 16 20 (fetchpatch {