Remove extra semicolon
Remove extra semicolon

`npm run build` fails cause of it with next error:
```
webpack-runtime-analyzer/node_modules/css-tree/lib/utils/names.js:65
    var hack = property[0];
                       ^
TypeError: Cannot read property '0' of undefined
```

smelukov/webpack-runtime-analyzer,smelukov/webpack-runtime-analyzer