Fix for md5.sumhexa and md5.sumHEXA

source/texk/web2c/luatexdir/lua/luainit.w

@@ -1023,6 +1023,10 @@ void lua_initialize(int ac, char **av)
         }
         /* */
         init_tex_table(Luas);
+	if (lua_only) {
+	  if (load_luatex_core_lua(Luas))
+	    fprintf(stderr, "Error in execution of luatex-core.lua .\n");
+	}
         if (lua_pcall(Luas, 0, 0, 0)) {
             fprintf(stdout, "%s\n", lua_tostring(Luas, -1));
         lua_traceback(Luas);