Support redirect rules with no pattern

Related issue:
- uBlockOrigin/uBlock-issues#977

No pattern will imply `*` for the redirect destination
part of the rule.

src/js/redirect-engine.js

@@ -529,7 +529,7 @@ RedirectEngine.prototype.compileRuleFromStaticFilter = function(line) {
 
 /******************************************************************************/
 
-RedirectEngine.prototype.reFilterParser = /^(?:\|\|([^\/:?#^]+)|\*)([^$]+)?\$([^$]+)$/;
+RedirectEngine.prototype.reFilterParser = /^(?:\|\|([^\/:?#^]+)|\*?)([^$]+)?\$([^$]+)$/;
 
 RedirectEngine.prototype.supportedTypes = new Map([
     [ 'css', 'stylesheet' ],