Fixed: (Immortalseed) Keywordless Search

src/NzbDrone.Core/Indexers/Definitions/ImmortalSeed.cs

@@ -170,16 +170,21 @@ namespace NzbDrone.Core.Indexers.Definitions
 
         private IEnumerable<IndexerRequest> GetPagedRequests(string term, int[] categories, string imdbId = null)
         {
-            var searchUrl = Settings.BaseUrl + "browse.php";
+            var searchUrl = Settings.BaseUrl + "browse.php?";
 
             if (term.IsNotNullOrWhiteSpace())
             {
-                searchUrl += string.Format("?do=search&keywords={0}&search_type=t_name&category=0&include_dead_torrents=no", WebUtility.UrlEncode(term));
+                searchUrl += string.Format("do=search&keywords={0}&search_type=t_name&category=0&include_dead_torrents=no", WebUtility.UrlEncode(term));
             }
 
             if (categories != null && categories.Length > 0)
             {
-                searchUrl += "&selectedcats2=" + string.Join(",", Capabilities.Categories.MapTorznabCapsToTrackers(categories));
+                if (term.IsNotNullOrWhiteSpace())
+                {
+                     searchUrl += "&";
+                }
+
+                searchUrl += "selectedcats2=" + string.Join(",", Capabilities.Categories.MapTorznabCapsToTrackers(categories));
             }
 
             var request = new IndexerRequest(searchUrl, HttpAccept.Html);