Normalize _bt_finish_split() argument names.
Make a function prototype argument's name match the function
definition's argument name.
@@ -748,7 +748,7 @@ extern void _bt_parallel_advance_array_keys(IndexScanDesc scan);
*/
extern bool _bt_doinsert(Relation rel, IndexTuple itup,
IndexUniqueCheck checkUnique, Relation heapRel);
-extern void _bt_finish_split(Relation rel, Buffer bbuf, BTStack stack);
+extern void _bt_finish_split(Relation rel, Buffer lbuf, BTStack stack);
extern Buffer _bt_getstackbuf(Relation rel, BTStack stack, BlockNumber child);
/*
