multi_socket_client: fix timeout check

src/multi_socket_client.c

@@ -295,7 +295,7 @@ static int fast_multi_sock_client_deal_io(FastMultiSockClient *client)
 
     while (client->pulling_count > 0) {
         remain_timeout = client->deadline_time - get_current_time();
-        if (remain_timeout <= 0) {  //timeout
+        if (remain_timeout < 0) {  //timeout
             break;
         }
 

src/multi_socket_client.h

@@ -40,10 +40,10 @@ typedef struct fast_multi_sock_entry {
     ConnectionInfo *conn;     //the socket must be non-block socket
     FastBuffer *send_buffer;  //send buffer for internal use
     fast_multi_sock_client_io_func io_callback;  //for internal use
-    FastBuffer recv_buffer;   //recv buffer
+    FastBuffer recv_buffer;   //recv buffer for response package
     int error_no;             //0 for success, != 0 fail
     int remain;               //remain bytes, for internal use
-    FastMultiSockRecvStage recv_stage;
+    FastMultiSockRecvStage recv_stage;  //for internal use
     bool done;                //for internal use
 } FastMultiSockEntry;