Remove unused nbtree array advancement variable.

Remove a variable that is no longer in use following commit 9a2e2a28.
It's not immediately clear why there were no compiler warnings about
this oversight.

Author: Peter Geoghegan <pg@bowt.ie>
Backpatch-through: 18

diff --git a/src/backend/access/nbtree/nbtutils.c b/src/backend/access/nbtree/nbtutils.c
index 7c57f7075dbb7a39b4ec5465c933fb0bc4670ed6..288da8b68abd20ab10d87987ce6cb1963b9cca62 100644 (file)
--- a/src/backend/access/nbtree/nbtutils.c
+++ b/src/backend/access/nbtree/nbtutils.c
@@ -1449,7 +1449,6 @@ _bt_advance_array_keys(IndexScanDesc scan, BTReadPageState *pstate,
                BTArrayKeyInfo *array = NULL;
                Datum           tupdatum;
                bool            required = false,
-                                       required_opposite_direction_only = false,
                                        tupnull;
                int32           result;
                int                     set_elem = 0;
@@ -1473,8 +1472,7 @@ _bt_advance_array_keys(IndexScanDesc scan, BTReadPageState *pstate,
                                  (cur->sk_flags & (SK_BT_REQBKWD))) ||
                                 (ScanDirectionIsBackward(dir) &&
                                  (cur->sk_flags & (SK_BT_REQFWD)))))
-                               has_required_opposite_direction_only =
-                                       required_opposite_direction_only = true;
+                               has_required_opposite_direction_only = true;
                }
 
                /* Optimization: skip over known-satisfied scan keys */