added symmetric assert (that will probably run first)

lib/cloud.js

@@ -30,6 +30,7 @@ export class Cloud {
   async alreadyUploaded (remote) {
     const release = await this._findRelease(remote.tag);
     return release.assets.some(({ name }) => {
+      assert(name);
       return remote.name === name;
     });
   }