[JFFS2] Initialise ref->next_in_ino when marking dirty space in wbuf flush

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index 404b547..45e3573 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -507,6 +507,7 @@
 			return -ENOMEM;
 		ref->flash_offset = c->wbuf_ofs + c->wbuf_len;
 		ref->flash_offset |= REF_OBSOLETE;
+		ref->next_in_ino = NULL;
 
 		spin_lock(&c->erase_completion_lock);