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, 2 insertions, 2 deletions

diff --git a/server/reds.h b/server/reds.h
index 81da46d0..188bed5e 100644
--- a/server/reds.h
+++ b/server/reds.h
@@ -133,8 +133,8 @@ void reds_update_stat_value(uint32_t value);
 // callbacks from main channel messages
 void reds_on_main_agent_start(void);
 void reds_on_main_agent_data(MainChannelClient *mcc, void *message, size_t size);
-void reds_on_main_migrate_connected();
-void reds_on_main_migrate_connect_error();
+void reds_on_main_migrate_connected(void);
+void reds_on_main_migrate_connect_error(void);
 void reds_on_main_receive_migrate_data(MainMigrateData *data, uint8_t *end);
 void reds_on_main_mouse_mode_request(void *message, size_t size);