Fix UNINIT_CTOR

src/sql/engine/dml/ob_table_update.h

@@ -52,7 +52,9 @@ public:
           part_key_(),
           part_row_cnt_(0),
           part_infos_(),
-          cur_part_idx_(0)
+          cur_part_idx_(0),
+          new_row_projector_(NULL),
+          new_row_projector_size_(0)
     {}
     ~ObTableUpdateCtx()
     {}