make sure that _writeTickCount is set *before* it gets in the queue (otherwise...

make sure that _writeTickCount is set *before* it gets in the queue (otherwise heartbeat will freak)

StackExchange.Redis/Message.cs

@@ -626,13 +626,16 @@ internal void SetException(Exception exception)
         internal void SetRequestSent()
         {
             Status = CommandStatus.Sent;
+            performance?.SetRequestSent();
+        }
+        // the time (ticks) at which this message was considered written
+        internal void SetWriteTime()
+        {
             if ((Flags & NeedsAsyncTimeoutCheckFlag) != 0)
             {
                 _writeTickCount = Environment.TickCount; // note this might be reset if we resend a message, cluster-moved etc; I'm OK with that
             }
-            performance?.SetRequestSent();
         }
-        // the time (ticks) at which this message was considered written
         private int _writeTickCount;
 
         private void SetNeedsTimeoutCheck() => Flags |= NeedsAsyncTimeoutCheckFlag;

StackExchange.Redis/PhysicalConnection.cs

@@ -454,6 +454,7 @@ internal static void IdentifyFailureType(Exception exception, ref ConnectionFail
 
         internal void EnqueueInsideWriteLock(Message next)
         {
+            next.SetWriteTime();
             lock (_writtenAwaitingResponse)
             {
                 _writtenAwaitingResponse.Enqueue(next);