pass numbers to writer instead of hex strings

lips/Dumper.lua

@@ -233,8 +233,7 @@ end
 
 function Dumper:write(t)
     for _, b in ipairs(t) do
-        local s = ('%02X'):format(b)
-        self.writer(self.pos, s)
+        self.writer(self.pos, b)
         self.pos = self.pos + 1
     end
 end

lips/init.lua

@@ -18,7 +18,7 @@ function lips.word_writer()
     local max = -1
     return function(pos, b)
         if pos then
-            buff[pos] = b
+            buff[pos] = ("%02X"):format(b)
             if pos > max then
                 max = pos
             end