fix(ngRoute): remove unnecessary call to decodeURIComponent

Since `$location.$$path` is already decoded, doing an extra `decodeURIComponent` is both unnecessary
and can cause problems. Specifically, if the path originally includes an encoded `%` (aka `%25`),
then ngRoute will throw "URIError: URI malformed".

Closes #6326
Closes #6327

src/ngRoute/route.js

@@ -468,9 +468,7 @@ function $RouteProvider(){
       for (var i = 1, len = m.length; i < len; ++i) {
         var key = keys[i - 1];
 
-        var val = 'string' == typeof m[i]
-              ? decodeURIComponent(m[i])
-              : m[i];
+	      var val = m[i];
 
         if (key && val) {
           params[key.name] = val;