Fix memory leaks in ATX

Author: knizhnik

src/backend/access/transam/xact.c

@@ -3622,6 +3622,8 @@ bool ResumeTransaction(void)
 		prepareGID = sus->prepareGID;
 		forceSyncCommit = sus->forceSyncCommit;
 
+		MemoryContextDelete(TransactionAbortContext);
+
 		TopTransactionContext = sus->TopTransactionContext;
 		CurTransactionContext = sus->CurTransactionContext;
 		TransactionAbortContext = sus->TransactionAbortContext;

src/backend/utils/time/snapmgr.c

@@ -2188,6 +2188,13 @@ void ResumeSnapshot(void *data)
 	//UnregisterSnapshot(CatalogSnapshot);
 	//UnregisterSnapshot(HistoricSnapshot);
 
+	free(CurrentSnapshotData.xip);
+	free(CurrentSnapshotData.subxip);
+	free(SecondarySnapshotData.xip);
+	free(SecondarySnapshotData.subxip);
+	free(CatalogSnapshotData.xip);
+	free(CatalogSnapshotData.subxip);
+
 	CurrentSnapshotData = s->CurrentSnapshotData;
 	SecondarySnapshotData = s->SecondarySnapshotData;
 	CatalogSnapshotData = s->CatalogSnapshotData;