From 38753b4300704c03cb5cc5add2731ebf18972c34 Mon Sep 17 00:00:00 2001
From: matyhtf <mikan.tenny@gmail.com>
Date: Thu, 22 Nov 2018 19:57:15 +0800
Subject: [PATCH] fix wait.cc bugs.

---
 src/os/wait.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/os/wait.cc b/src/os/wait.cc
index e487bca38c3..e730148689a 100644
--- a/src/os/wait.cc
+++ b/src/os/wait.cc
@@ -44,7 +44,7 @@ static void signal_handler(int signo)
         while(true)
         {
             pid_t __pid = waitpid(-1, &__stat_loc, WNOHANG);
-            if (__pid < 0)
+            if (__pid <= 0)
             {
                 break;
             }