[PATCH v1] remove redundant check of item pointer

[Junwang Zhao]

In function ItemPointerEquals, the ItemPointerGetBlockNumber
already checked the ItemPointer if valid, there is no need
to check it again in ItemPointerGetOffset, so use
ItemPointerGetOffsetNumberNoCheck instead.

Signed-off-by: Junwang Zhao <zhjw...@gmail.com>
---
 src/backend/storage/page/itemptr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/backend/storage/page/itemptr.c 
b/src/backend/storage/page/itemptr.c
index 9011337aa8..61ad727b1d 100644
--- a/src/backend/storage/page/itemptr.c
+++ b/src/backend/storage/page/itemptr.c
@@ -37,8 +37,8 @@ ItemPointerEquals(ItemPointer pointer1, ItemPointer pointer2)
 
        if (ItemPointerGetBlockNumber(pointer1) ==
                ItemPointerGetBlockNumber(pointer2) &&
-               ItemPointerGetOffsetNumber(pointer1) ==
-               ItemPointerGetOffsetNumber(pointer2))
+               ItemPointerGetOffsetNumberNoCheck(pointer1) ==
+               ItemPointerGetOffsetNumberNoCheck(pointer2))
                return true;
        else
                return false;
-- 
2.33.0