Define WS_INVALID_PID to be the appropriate "there is no process" value.
On UN*X, -1 works; the "pid" is actually a HANDLE for the process on
Windows, so INVALID_HANDLE is appropriate.
Cast HANDLE to intptr_t in the _cwait() call.
Change-Id: Ica2d2319f5c95ba41f590776a745fe040fe494d2
Reviewed-on: https://code.wireshark.org/review/8871
Reviewed-by: Guy Harris <guy@alum.mit.edu>
The MSVC rules for searching for headers are a huge barrel of fun; it
appears that, for some files that need the MSVC <process.h> to declare
getpid(), they're getting our <wsutil/process.h> instead, as that's in
the current directory. Rename it to avoid the collision.
Change-Id: I88eb70237062fa7957e38d7ff8132524390a6a5c
Reviewed-on: https://code.wireshark.org/review/8870
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Guy Harris