fixing type of WinNet.hostent.h_addr_list.- Refs: #78.
As proposed by Stewart Greenhill in CPC 1.6 rc5 except:
- not using WinApi.PtrSTR for the element type because this is not a zero terminated string;
- using a type cast in CommTCP for explicitly expressing the specialization to in_addr.

Signed-off-by: Josef Templ <josef.templ@gmail.com>