Fix quick mode sending async-mode packets when paused

This wasn't much of on issue because no tick events are fired normally while
paused. When seeking we do however manually run a tick for better result, and
this manual tick would cause this async sending code to run and seek wildly into
the future.

src/main/java/com/replaymod/replay/QuickReplaySender.java

@@ -269,7 +269,7 @@ public class QuickReplaySender extends ChannelHandlerAdapter implements ReplaySe
         //$$ public void onTick(TickEvent.ClientTickEvent event) {
         //$$     if (event.phase != TickEvent.Phase.START) return;
         //#endif
-            if (!asyncMode) return;
+            if (!asyncMode || paused()) return;
 
             long now = System.currentTimeMillis();
             long realTimePassed = now - lastAsyncUpdateTime;