Make sure to convert to integers in Socket coercion methods

Author: eregon

lib/truffle/socket/truffle/socket_options.rb

@@ -43,7 +43,7 @@ def self.socket_level(level, family = nil)
         elsif level.respond_to?(:to_str)
           socket_level(Socket.coerce_to_string(level), family)
         else
-          level
+          Truffle::Type.coerce_to_int level
         end
       end
 
@@ -73,7 +73,7 @@ def self.socket_option(level, optname)
           if optname.respond_to?(:to_str)
             socket_option(level, Socket.coerce_to_string(optname))
           else
-            optname
+            Truffle::Type.coerce_to_int optname
           end
         end
       end