afs: Condense afs_call's reply{,2,3,4} into an array

Condense struct afs_call's reply anchor members - reply{,2,3,4} - into an
array.

Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/fs/afs/file.c b/fs/afs/file.c
index 510cba1..08f9f0c 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -281,7 +281,7 @@ static int afs_readpage(struct file *file, struct page *page)
 static void afs_readpages_page_done(struct afs_call *call, struct afs_read *req)
 {
 #ifdef CONFIG_AFS_FSCACHE
-	struct afs_vnode *vnode = call->reply;
+	struct afs_vnode *vnode = call->reply[0];
 #endif
 	struct page *page = req->pages[req->index];