fix: small bugs to make it compile

src/parser/grammar_advanced.c

@@ -22,6 +22,9 @@ static enum ast_redir_type redir_tok_to_ast_type(enum token_type tok_type)
 
 struct ast *parse_redirection(struct lexer_context *ctx)
 {
+    (void)ctx;
+    return NULL;
+    /*
     struct token *token = PEEK_TOKEN();
     int io_number = -1;
     if (token->type == TOKEN_IONUMBER)
@@ -53,6 +56,7 @@ struct ast *parse_redirection(struct lexer_context *ctx)
     POP_TOKEN();
 
     return ast_create_redir(io_number, redir_type, target);
+    */
 }
 
 struct ast *parse_prefix(struct lexer_context *ctx)