* include/ruby/intern.h (rb_io_get_io): added prototype.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22656 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

include/ruby/intern.h

@@ -408,6 +408,7 @@ VALUE rb_io_printf(int, VALUE*, VALUE);
 VALUE rb_io_print(int, VALUE*, VALUE);
 VALUE rb_io_puts(int, VALUE*, VALUE);
 VALUE rb_io_fdopen(int, int, const char*);
+VALUE rb_io_get_io(VALUE);
 VALUE rb_file_open(const char*, const char*);
 VALUE rb_file_open_str(VALUE, const char*);
 VALUE rb_gets(void);