bpo-42214: Fix check for NOTEQUAL token in the PEG parser for the barry_as_flufl rule (GH-23048)

diff --git a/Parser/pegen.h b/Parser/pegen.h
index 841f1e5..f82a3a0 100644
--- a/Parser/pegen.h
+++ b/Parser/pegen.h
@@ -263,7 +263,7 @@ expr_ty _PyPegen_collect_call_seqs(Parser *, asdl_expr_seq *, asdl_seq *,
                      int end_col_offset, PyArena *arena);
 expr_ty _PyPegen_concatenate_strings(Parser *p, asdl_seq *);
 asdl_seq *_PyPegen_join_sequences(Parser *, asdl_seq *, asdl_seq *);
-int _PyPegen_check_barry_as_flufl(Parser *);
+int _PyPegen_check_barry_as_flufl(Parser *, Token *);
 mod_ty _PyPegen_make_module(Parser *, asdl_stmt_seq *);
 
 // Error reporting helpers