[PATCH 1/2] support: Make support_process_state_wait return the found state

[Florian Weimer]

* Adhemerval Zanella:

> So caller can check which state was found if multiple ones are
> asked.
>
> Checked on x86_64-linux-gnu.
> ---
>  support/process_state.h         | 7 +++++--
>  support/support_process_state.c | 6 ++++--
>  2 files changed, 9 insertions(+), 4 deletions(-)

Please adjust support/tst-support-process_state.c to test the return
value.

Thanks,
Florian