Do not expect to always receive an instance of Channel in injector (#118

)

Mods like Raknetify break this assumption, so to avoid class cast exceptions we use an instanceof cast.

Fixes #100

src/main/java/org/geysermc/floodgate/inject/fabric/FabricInjector.java

@@ -22,7 +22,10 @@ public void injectClient(ChannelFuture future) {
             public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                 super.channelRead(ctx, msg);
 
-                Channel channel = (Channel) msg;
+                if (!(msg instanceof Channel channel)) {
+                    return;
+                }
+
                 channel.pipeline().addLast(new ChannelInitializer<Channel>() {
                     @Override
                     protected void initChannel(Channel channel) {