Fix ugly rubocop if and silent disconnect

lib/game_client.rb

@@ -79,7 +79,7 @@ class GameClient
       chunk:,
       client_id:,
       reason: reason == '' ? nil : reason,
-      silent:
+      silent: silent != 0
     )
     if @client.hooks[:client_drop]
       @client.hooks[:client_drop].call(context)

lib/packer.rb

@@ -83,11 +83,7 @@ class Unpacker
     str = ''
     @data.each_with_index do |byte, index|
       if byte == 0x00
-        @data = if index == @data.length - 1
+        @data = index == @data.length - 1 ? nil : @data[(index + 1)..]
-                  nil
-                else
-                  @data[(index + 1)..]
-                end
         return str
       end
       str += byte.chr

sample.rb

@@ -32,7 +32,7 @@ client.on_chat do |msg|
 end
 
 client.on_client_info do |ctx|
-  puts "'#{ctx.data[:player].name}' joined the game#{reason}"
+  puts "'#{ctx.data[:player].name}' joined the game"
 end
 
 client.on_client_drop do |ctx|