Wrong alignment

[MeiKatz]

Shouldn't the alignment be 2 for INT16?
(https://github.com/mvidner/ruby-dbus/blob/master/lib/dbus/marshall.rb#L135-L140)

[mvidner]

Oh, you are right! Thanks!

Specification reference: Byte order and alignment

Each value in a block of bytes is aligned "naturally," for example 4-byte values are aligned to a 4-byte boundary, and 8-byte values to an 8-byte boundary.

Is there a public API that fails because of this, that I should quote in the fix?

[MeiKatz]

I am not sure. I noticed it while restructuring your code base for my own needs. Maybe I will publish same in the near future and we can look what you can take for the original project.

[mvidner]

Thanks!