Fixed null HGETALL bug causing exception

index.js

@@ -436,7 +436,7 @@ RedisClient.prototype.return_reply = function (reply) {
     if (command_obj) {
         if (typeof command_obj.callback === "function") {
             // HGETALL special case replies with keyed Buffers
-            if ('HGETALL' === command_obj.command) {
+            if (reply && 'HGETALL' === command_obj.command) {
                 var obj = {};
                 for (var i = 0, len = reply.length; i < len; i += 2) {
                     var key = reply[i].toString(),

test.js

@@ -347,6 +347,16 @@ tests.HGETALL = function () {
     });
 };
 
+tests.HGETALL_NULL = function () {
+    var name = "HGETALL_NULL";
+    client.hgetall('missing', function(err, obj){
+        console.log(err);
+        console.log(obj);
+        next(name);
+    });
+};
+
+
 var all_tests = Object.keys(tests),
     all_start = new Date(), cur_start, test_count = 0;