Fix spurious rejection of some AdGuard redirect filters

Lines in AdGuard filter lists have trailing `\r`
characters, and these caused the redirect engine
compile code to reject as invalid the redirect
token.

This is trivially fixed by trimming the raw option
strings before parsing it in the redirect engine.

src/js/redirect-engine.js

@@ -460,7 +460,7 @@ RedirectEngine.prototype.compileRuleFromStaticFilter = function(line) {
     let type,
         redirect = '',
         srchns = [];
-    for ( const option of matches[3].split(',') ) {
+    for ( const option of matches[3].trim().split(/,/) ) {
         if ( option.startsWith('redirect=') ) {
             redirect = option.slice(9);
             continue;