blocking assigment with member_identifier miss parse to clockvar_expression

[zoomer-k]

simple example

============================================
always -- case member
============================================

module abc ();

always_comb
case ( foo )
  8'h00, 8'h05: bar.baz = 1'b0;
  default       bar = 1;
endcase

endmodule

----

parse to

    (source_file
      (module_declaration
        (module_header
          (module_keyword)
          (simple_identifier))
        (module_nonansi_header
          (list_of_ports))
        (module_or_generate_item
          (always_construct
            (always_keyword)
            (statement
              (statement_item
                (case_statement
                  (case_keyword)
                  (case_expression
                    (expression
                      (primary
                        (simple_identifier))))
                  (ERROR
                    (case_item_expression
                      (expression
                        (primary
                          (primary_literal
                            (integral_number
                              (hex_number))))))
                    (case_item_expression
                      (expression
                        (primary
                          (primary_literal
                            (integral_number
                              (hex_number))))))
                    (clockvar_expression
                      (clockvar
                        (simple_identifier))
                      (select1
                        (member_identifier
                          (simple_identifier)))))
                  (case_item
                    (statement_or_null
                      (statement
                        (statement_item
                          (blocking_assignment
                            (operator_assignment
                              (variable_lvalue
                                (simple_identifier))
                              (assignment_operator)
                              (expression
                                (primary
                                  (primary_literal
                                    (integral_number
                                      (decimal_number
                                        (unsigned_number)))))))))))))))))))

maybe correct parse is

    (source_file
      (module_declaration
        (module_header
          (module_keyword)
          (simple_identifier))
        (module_nonansi_header
          (list_of_ports))
        (module_or_generate_item
          (always_construct
            (always_keyword)
            (statement
              (statement_item
                (case_statement
                  (case_keyword)
                  (case_expression
                    (expression
                      (primary
                        (simple_identifier))))
                  (case_item
                    (case_item_expression
                      (expression
                        (primary
                          (primary_literal
                            (integral_number
                              (hex_number))))))
                    (case_item_expression
                      (expression
                        (primary
                          (primary_literal
                            (integral_number
                              (hex_number))))))
                    (statement_or_null
                      (statement
                        (statement_item
                          (blocking_assignment
                            (operator_assignment
                              (variable_lvalue
                                (simple_identifier)
                                (select1
                                  (member_identifier
                                    (simple_identifier))))
                              (assignment_operator)
                              (expression
                                (primary
                                  (primary_literal
                                    (integral_number
                                      (binary_number)))))))))))
                  (case_item
                    (statement_or_null
                      (statement
                        (statement_item
                          (blocking_assignment
                            (operator_assignment
                              (variable_lvalue
                                (simple_identifier))
                              (assignment_operator)
                              (expression
                                (primary
                                  (primary_literal
                                    (integral_number
                                      (decimal_number
                                        (unsigned_number)))))))))))))))))))

#58
when change grammar.js follow this PR

but corpus folder dont have clocking block test pattern.
so cant check side effect

@drom
could you add test pattern for this commit? if you could
fd07bc8