libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line

{
                    "vendor": "tomolt",
                    "product": "libschrift",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "lessThanOrEqual": "0.10.2",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "collectionURL": "https://github.com/tomolt/libschrift",
                    "repo": "https://github.com/tomolt/libschrift"
                }