#414 Fix compiler warnings in VOS Windows_sim

[Anders Öberg]

Fix the following compiler warnings:
1>C:\Source\TCNOpen\trunk\trdp\src\vos\windows_sim\vos_sock.c(221,26): warning C4244: 'function': conversion from 'SOCKET' to 'SIM_SOCKET', possible loss of data

1>C:\Source\TCNOpen\trunk\trdp\src\vos\windows_sim\vos_sock.c(1270,21): warning C4244: 'function': conversion from 'SOCKET' to 'SIM_SOCKET', possible loss of data

1>C:\Source\TCNOpen\trunk\trdp\src\vos\windows_sim\vos_thread.c(867): warning C4716: 'vos_threadRegisterExisting': must return a value

1>C:\Source\TCNOpen\trunk\trdp\src\vos\windows_sim\vos_thread.c(881): warning C4716: 'vos_threadRegister': must return a value

[Anders Öberg]

Commited in 2364