branches/zip: ibuf_insert_to_index_page(): Discard the local variable block.

page_cur is always positioned on block, the function parameter.

ibuf/ibuf0ibuf.c

@@ -2981,11 +2981,9 @@ ibuf_insert_to_index_page(
 				    PAGE_CUR_LE, &page_cur);
 
 	if (low_match == dtuple_get_n_fields(entry)) {
-		buf_block_t*	block;
 		page_zip_des_t*	page_zip;
 
 		rec = page_cur_get_rec(&page_cur);
-		block = page_cur_get_block(&page_cur);
 		page_zip = buf_block_get_page_zip(block);
 
 		btr_cur_del_unmark_for_ibuf(rec, page_zip, mtr);