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