Update instance types

src/kemal/common_log_handler.cr

@@ -2,7 +2,7 @@ require "colorize"
 require "http"
 
 class Kemal::CommonLogHandler < Kemal::BaseLogHandler
-  @handler : IO::FileDescriptor+
+  @handler : IO::FileDescriptor
   getter handler
 
   def initialize(@env)

src/kemal/config.cr

@@ -2,7 +2,7 @@ module Kemal
   class Config
     INSTANCE = Config.new
     HANDLERS = [] of HTTP::Handler
-    @ssl : OpenSSL::SSL::Context
+    @ssl : OpenSSL::SSL::Context?
 
     property host_binding, ssl, port, env, public_folder, logging,
       always_rescue, serve_static, run
@@ -18,7 +18,7 @@ module Kemal
       @error_handler = nil
       @always_rescue = true
       @run = false
-      @ssl = uninitialized OpenSSL::SSL::Context
+      @ssl = nil
     end
 
     def logger

src/kemal/param_parser.cr

@@ -9,7 +9,7 @@ class Kemal::ParamParser
   URL_ENCODED_FORM = "application/x-www-form-urlencoded"
   APPLICATION_JSON = "application/json"
 
-  def initialize(@request : HTTP::Request, @url_params : String? = nil , @override_method : String? = nil)
+  def initialize(@request : HTTP::Request)
     @url = {} of String => String
     @query = {} of String => String
     @body = {} of String => String