| Index: inject.preload.js |
| =================================================================== |
| --- a/inject.preload.js |
| +++ b/inject.preload.js |
| @@ -174,8 +174,11 @@ |
| { |
| for (let name of properties) |
| { |
| - Object.defineProperty(dest, name, |
| - Object.getOwnPropertyDescriptor(src, name)); |
| + if (src.hasOwnProperty(name)) |
| + { |
| + Object.defineProperty(dest, name, |
| + Object.getOwnPropertyDescriptor(src, name)); |
| + } |
| } |
| } |