#461 Parser: expect ## not expected

[StevenAZ]

Found in 1.9.1:

~~~~~

module bob ();
logic clk, a_signal;

initial
begin
expect( @(posedge clk) ##[1:50] a_signal ) // Parser error on ##
else begin // Indent error ... else should not be indented
$display("mismatch event");
end // indent error, indent once more
end

endmodule

[StevenAZ]

Fixed in 1.9.3