row_purge_parse_undo_rec(): Correct a faulty condition. Luckily, this

bug would only surface if the InnoDB SQL interpreter were used for
updating fixed-length columns.  Currently (as the UPD_NODE_NO_SIZE_CHANGE
flag is never set), cmpl_info can only be 0 or UPD_NODE_NO_ORD_CHANGE.
Luckily, UPD_NODE_NO_ORD_CHANGE is 1, and the condition was simplified
to !cmpl_info.

row/row0purge.c

@@ -563,7 +563,7 @@ row_purge_parse_undo_rec(
 
 	/* Read to the partial row the fields that occur in indexes */
 
-	if (!cmpl_info & UPD_NODE_NO_ORD_CHANGE) {
+	if (!(cmpl_info & UPD_NODE_NO_ORD_CHANGE)) {
 		ptr = trx_undo_rec_get_partial_row(ptr, clust_index,
 						   &(node->row), node->heap);
 	}