load user pins in the database worker

lib/hk-util.js

@@ -625,6 +625,8 @@ const handleGetHistoryRange = function (Env, Server, seq, userId, parsed) {
             Env.Log.error("HK_GET_OLDER_HISTORY", err);
         }
 
+        if (!Array.isArray(messages)) { messages = []; }
+
         var toSend = [];
         if (typeof (desiredMessages) === "number") {
             toSend = messages.slice(-desiredMessages);
@@ -886,6 +888,15 @@ HK.initializeIndexWorkers = function (Env, config, _cb) {
             });
         };
 
+        Env.getPinState = function (safeKey, cb) {
+            Env.pinStore.getWeakLock(safeKey, function (next) {
+                sendCommand({
+                    key: safeKey,
+                    command: 'GET_PIN_STATE',
+                }, Util.both(next, cb));
+            });
+        };
+
         //console.log("index workers ready");
         cb(void 0);
     });