server: fix function prototypes

Several functions in server/ were not specifying an argument list,
ie they were declared as void foo(); When compiling with
-Wstrict-prototypes, this leads to:
test_playback.c:93:5: erreur: function declaration isn’t a prototype
[-Werror=strict-prototypes]

1 files changed, 1 insertions, 1 deletions

diff --git a/server/tests/basic_event_loop.c b/server/tests/basic_event_loop.c
index c74cbd83..e0cc06e6 100644
--- a/server/tests/basic_event_loop.c
+++ b/server/tests/basic_event_loop.c
@@ -159,7 +159,7 @@ void calc_next_timeout(SpiceTimer *next, struct timeval *timeout)
     tv_b_minus_a_return_le_zero(&now, &next->tv_start, timeout);
 }
 
-void timeout_timers()
+void timeout_timers(void)
 {
     SpiceTimer *next;
     struct timeval left;