Fix typo in xlogreader.h and procarray.c

From 15d83c69858318bf656802d1b14c52c063c83e80 Mon Sep 17 00:00:00 2001
From: root <root@localhost.localdomain>
Date: Mon, 2 Nov 2020 20:34:00 -0500
Subject: [PATCH] fix typo

---
 src/backend/storage/ipc/procarray.c | 2 +-
 src/include/access/xlogreader.h     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/backend/storage/ipc/procarray.c b/src/backend/storage/ipc/procarray.c
index 8da7b1d..05661e3 100644
--- a/src/backend/storage/ipc/procarray.c
+++ b/src/backend/storage/ipc/procarray.c
@@ -1600,7 +1600,7 @@ TransactionIdIsActive(TransactionId xid)
  * See the definition of ComputedXidHorizonsResult for the various computed
  * horizons.
  *
- * For VACUUM separate horizons (used to to decide which deleted tuples must
+ * For VACUUM separate horizons (used to decide which deleted tuples must
  * be preserved), for shared and non-shared tables are computed.  For shared
  * relations backends in all databases must be considered, but for non-shared
  * relations that's not required, since only backends in my own database could
diff --git a/src/include/access/xlogreader.h b/src/include/access/xlogreader.h
index b976882..0b6d00d 100644
--- a/src/include/access/xlogreader.h
+++ b/src/include/access/xlogreader.h
@@ -17,7 +17,7 @@
  *		XLogBeginRead() or XLogFindNextRecord(), and call XLogReadRecord()
  *		until it returns NULL.
  *
- *		Callers supply a page_read callback if they want to to call
+ *		Callers supply a page_read callback if they want to call
  *		XLogReadRecord or XLogFindNextRecord; it can be passed in as NULL
  *		otherwise.  The WALRead function can be used as a helper to write
  *		page_read callbacks, but it is not mandatory; callers that use it,
-- 
1.8.3.1