Fix another memory leak in executor.

diff --git a/src/backend/access/common/heaptuple.c b/src/backend/access/common/heaptuple.c
index 0354bb2989853b76709b4e9cdb60e053a45da212..ff3b25e32fe5ed89d3bb443b5a5875b03c5f6f9f 100644 (file)
--- a/src/backend/access/common/heaptuple.c
+++ b/src/backend/access/common/heaptuple.c
@@ -1325,6 +1325,10 @@ slot_deform_datarow(TupleTableSlot *slot)
                                }
                                data = MemoryContextAlloc(slot->tts_drowcxt, data_length);
                                memcpy(data, val, data_length);
+
+                               if (slot->tts_values[i])
+                                       pfree(slot->tts_values[i]);
+
                                slot->tts_values[i] = (Datum) data;
                        }
                }