Exception in onBeforeRequest on `sodaplay.com/creators/soda/items/constructor`

[gorhill]

Caused by the contructor keyword in the URL. Exception occurs when:

f = bucket0[token];
if ( f !== undefined && f.match(url, beg) !== false ) {
    return f;
}

Need to use hasOwnProperty in FilterContainer.prototype.matchTokens to avoid looking up token in prototype chain.