ser-mingw.c will be failed to build on GCC4.4.

[Masaki Muranaka]

Hello,

Some functions in ser-mingw.c is declared with return value, with no return statement.
For example, console_select_thread(), pipe_select_thread(), file_select_thread().

This is not issue on GCC4.3 or below, but GCC4.4 treats them as warning.

I don't see how to fix these functions. Could someone review them?

--
Masaki Muranaka
Monami Software