Fix minor errors

.yardopts

@@ -1 +1 @@
---protected source/*.rb servers/*.rb - README
+--protected source/*.rb source/servers/*.rb

source/module.rb

@@ -123,7 +123,7 @@ module Vrobot4::Module
             end
          else
             if opt.length
-               check_arg argv, 0, opt[0] if argv.length
+               check_arg argv, 0, opt[0] unless argv.empty?
             else
                check_arg argv, 0, req[0]
             end

source/server.rb

@@ -128,7 +128,7 @@ module Vrobot4::Server
       def initialize info
          @info = info
          @modules = [Mod_Base.new(nil)]
-         load_permissions info["permissions"] if info.key? "permissions"
+         load_permissions info["permissions"]
       end
 
       # Loads and initializes a module into the load list.