Fix some error messages, intialize announcement to null

lib/get-info.js

@@ -82,11 +82,14 @@ module.exports = function (Server) {
                 } else if(status === 403) {
                     callback("Private video", null);
                     return;
+                } else if(status === 400) {
+                    callback("Invalid video", null);
+                    return;
                 } else if(status === 503) {
                     callback("API failure", null);
                     return;
                 } else if(status !== 200) {
-                    callback(true, null);
+                    callback("HTTP " + status, null);
                     return;
                 }
                 

lib/server.js

@@ -79,6 +79,7 @@ var Server = {
     db: null,
     ips: {},
     acp: null,
+    announcement: null,
     httpaccess: null,
     actionlog: null,
     logHTTP: function (req, status) {