gdb.threads/pthreads.c, K&R -> ANSI function style

gdb.threads/pthreads.c is declaring functions with old K&R style.
This commit converts them to ANSI style.

Approved-By: Tom Tromey <tom@tromey.com>
Change-Id: I1ce007c67bb4ab1e49248c014c7881e46634f8f8
1 file changed