FIX: NullReferenceException when accessing cookie.

When the steamLogin cookie was not in the collection a
NullReferenceException was caught and propagated out which prevented the
badge page from ever loading.

Source/IdleMaster/CookieClient.cs

@@ -31,9 +31,9 @@ protected override WebResponse GetWebResponse(WebRequest request, System.IAsyncR
 
                 // Check, if cookie should be deleted. This means that sessionID is now invalid and user has to log in again.
                 // Maybe this shoud be done other way (authenticate exception), but because of shared settings and timers in frmMain...
-                if (cookies.Count > 0)
+                foreach (Cookie c in cookies)
                 {
-                    if (cookies["steamLogin"].Value == "deleted")
+                    if (c.Name == "steamLogin" && c.Value == "deleted")
                     {
                         Settings.Default.sessionid = string.Empty;
                         Settings.Default.steamLogin = string.Empty;