[Replicant] Tiny fixes / improvements for libsamsung-ipc

[Denis 'GNUtoo' Carikli]

Hi,

Here are some small patches that I made while working on other parts
of the code.

In addition to the patches that will follow in a response to
this mail, here's an URL to the see the patches in a web interface:
https://git.replicant.us/contrib/GNUtoo/hardware_replicant_libsamsung-ipc/commit/?id=5a643dd89e2636cea19d9642c3a205d2d20250ec

And here's how to get them in a git repository:
git clone https://git.replicant.us/GNUtoo/hardware_replicant_libsamsung-ipc
cd hardware_replicant_libsamsung-ipc
git show 5a643dd89e2636cea19d9642c3a205d2d20250ec

Denis.