Fix typos in logical.c and reorderbuffer.c.

Reviewed-by: Sawada  Masahiko
Discussion: https://postgr.es/m/CAA4eK1K6zTpuqf_d7wXCBjo_EF0_B6Fz3Ecp71Vq18t=wG-nzg@mail.gmail.com

src/backend/replication/logical/logical.c

@@ -1477,7 +1477,7 @@ UpdateDecodingStats(LogicalDecodingContext *ctx)
 	if (rb->spillBytes <= 0)
 		return;
 
-	elog(DEBUG2, "UpdateSpillStats: updating stats %p %lld %lld %lld",
+	elog(DEBUG2, "UpdateDecodingStats: updating stats %p %lld %lld %lld",
 		 rb,
 		 (long long) rb->spillTxns,
 		 (long long) rb->spillCount,

src/backend/replication/logical/reorderbuffer.c

@@ -1432,7 +1432,7 @@ ReorderBufferCleanupTXN(ReorderBuffer *rb, ReorderBufferTXN *txn)
 		ReorderBufferCleanupTXN(rb, subtxn);
 	}
 
-	/* cleanup changes in the toplevel txn */
+	/* cleanup changes in the txn */
 	dlist_foreach_modify(iter, &txn->changes)
 	{
 		ReorderBufferChange *change;
@@ -1533,7 +1533,7 @@ ReorderBufferTruncateTXN(ReorderBuffer *rb, ReorderBufferTXN *txn)
 		ReorderBufferTruncateTXN(rb, subtxn);
 	}
 
-	/* cleanup changes in the toplevel txn */
+	/* cleanup changes in the txn */
 	dlist_foreach_modify(iter, &txn->changes)
 	{
 		ReorderBufferChange *change;