Don't mark global variables.

diff --git a/ext/ext.c b/ext/ext.c
index eed0e6582b2f679f98b48a39da38b427b98f9ab1..583523e745863dde593e7956f9df23566ee8e84c 100644 (file)
--- a/ext/ext.c
+++ b/ext/ext.c
@@ -71,7 +71,6 @@ c_mark (RbVorbisTagger *o)
 {
        rb_gc_mark (o->io);
        rb_gc_mark (o->comments);
-       rb_gc_mark (io_buf);
 }
 
 static void