[iccpd] Fix missing semicolon. (#11197)

The return statement does not end with a semicolon in function scheduler_csm_socket_cleanup, which generates a compilation warning and may cause unexpected problems.

Signed-off-by: ouxiaolong <ouxiaolong@asterfusion.com>

src/iccpd/src/scheduler.c

@@ -871,7 +871,7 @@ void scheduler_csm_socket_cleanup(struct CSM* csm, int location)
         return;
 
     if (csm->sock_fd <= 0)
-        return
+        return;
 
     event.data.fd = csm->sock_fd;
     event.events = EPOLLIN;