Update mosquitto build shell script to fix install bug

guowenxue

2022-04-10 c7685f9912e89509acff5d2db54f9b3e955df2ee

 apue/2.Socket/socket_client.c

@@ -109,7 +109,8 @@
          }
       }

       //printf("Read %d bytes data from server: '%s'\n", rv, buf);

       sleep(5);
    }