[PATCH] Fix build warning in pthread_rwlock_*

[Andreas Schwab]

Siddhesh Poyarekar <siddhesh@redhat.com> writes:

> The first argument of elision_adapt and that of ELISION_*LOCK have
> different signs since __elision_rwcount is singned char and the

__elision_rwcount doesn't exist.

> argument of elision_adapt is uint8_t.  Modified elision_adapt to
> accept int8_t instead of uint8_t.

Make it signed char.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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