Remove extraneous (void) typedefs

See if this resolves rjwboys reported error:
threadwrap.h:204:42: error: expected expression before ‘do’
 #define protected_uint32_init(pval, val) atomic_init(pval, val)

src/sbbs3/ftpsrvr.c

@@ -5128,11 +5128,11 @@ void DLLCALL ftp_server(void* arg)
 	startup->recycle_now=FALSE;
 	startup->shutdown_now=FALSE;
 	terminate_server=FALSE;
-	(void)protected_uint32_init(&thread_count, 0);
+	protected_uint32_init(&thread_count, 0);
 
 	do {
 		listInit(&current_connections, LINK_LIST_MUTEX);
-		(void)protected_uint32_init(&active_clients, 0);
+		protected_uint32_init(&active_clients, 0);
 
 		/* Setup intelligent defaults */
 		if(startup->port==0)					startup->port=IPPORT_FTP;