Fix typos.

Amit Kapila · Amit Kapila · commit 8c2d8f6cc484 · 2020-11-03T08:38:27.000+05:30
Author: Hou Zhijie Discussion: https://postgr.es/m/855a9421839d402b8b351d273c89a8f8@G08CNEXMBPEKD05.g08.fujitsu.local
diff --git 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
@@ -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,

Original file line number	Diff line number	Diff line change
`@@ -1600,7 +1600,7 @@ TransactionIdIsActive(TransactionId xid)`
`1600`	`1600`	`* See the definition of ComputedXidHorizonsResult for the various computed`
`1601`	`1601`	`* horizons.`
`1602`	`1602`	`*`
`1603`		`- * For VACUUM separate horizons (used to to decide which deleted tuples must`
	`1603`	`+ * For VACUUM separate horizons (used to decide which deleted tuples must`
`1604`	`1604`	`* be preserved), for shared and non-shared tables are computed. For shared`
`1605`	`1605`	`* relations backends in all databases must be considered, but for non-shared`
`1606`	`1606`	`* relations that's not required, since only backends in my own database could`
Original file line number	Diff line number	Diff line change
`@@ -17,7 +17,7 @@`
`17`	`17`	`* XLogBeginRead() or XLogFindNextRecord(), and call XLogReadRecord()`
`18`	`18`	`* until it returns NULL.`
`19`	`19`	`*`
`20`		`- * Callers supply a page_read callback if they want to to call`
	`20`	`+ * Callers supply a page_read callback if they want to call`
`21`	`21`	`* XLogReadRecord or XLogFindNextRecord; it can be passed in as NULL`
`22`	`22`	`* otherwise. The WALRead function can be used as a helper to write`
`23`	`23`	`* page_read callbacks, but it is not mandatory; callers that use it,`