Partial fix for null multi bulk response.

index.js

@@ -784,23 +784,25 @@ Multi.prototype.exec = function (callback) {
 
         var i, il, j, jl, reply, args, obj, key, val;
 
-        for (i = 1, il = self.queue.length; i < il; i += 1) {
-            reply = replies[i - 1];
-            args = self.queue[i];
-            
-            // Convert HGETALL reply to object
-            if (reply && args[0].toLowerCase() === "hgetall") {
-                obj = {};
-                for (j = 0, jl = reply.length; j < jl; j += 2) {
-                    key = reply[j].toString();
-                    val = reply[j + 1];
-                    obj[key] = val;
+        if (replies) {
+            for (i = 1, il = self.queue.length; i < il; i += 1) {
+                reply = replies[i - 1];
+                args = self.queue[i];
+                
+                // Convert HGETALL reply to object
+                if (reply && args[0].toLowerCase() === "hgetall") {
+                    obj = {};
+                    for (j = 0, jl = reply.length; j < jl; j += 2) {
+                        key = reply[j].toString();
+                        val = reply[j + 1];
+                        obj[key] = val;
+                    }
+                    replies[i - 1] = reply = obj;
+                }
+                
+                if (typeof args[args.length - 1] === "function") {
+                    args[args.length - 1](null, reply);
                 }
-                replies[i - 1] = reply = obj;
-            }
-            
-            if (typeof args[args.length - 1] === "function") {
-                args[args.length - 1](null, reply);
             }
         }
 

test.js

@@ -204,6 +204,18 @@ tests.MULTI_6 = function () {
         });
 };
 
+tests.WATCH_MULTI = function () {
+  var name = 'WATCH_MULTI';
+
+  client.watch(name);
+  var multi = client.multi();
+  multi.incr(name);
+  client.incr(name);
+  multi.exec(function (err, replies) {
+    next(name);
+  });
+};
+
 tests.HSET = function () {
     var key = "test hash",
         field1 = new Buffer("0123456789"),