indent lost after endcase of randcase block

[keeeeymann]

I have this example:

begin
    randcase
        1: value = 1;
    endcase

    begin //indent problem
    end
end

begin
    case (x)
        1: value = 1;
    endcase

    begin
    end
end

The indentation begin-end block after endcase of randcase is wrongly reset to zero after indenting.

The case block has no problem.

begin
    randcase
        1: value = 1;
    endcase

begin //indent problem
end
end

begin
    case (x)
        1: value = 1;
    endcase

    begin
    end
end

[keeeeymann]

submitted PR #251 for the issue, along with some tests