Use then check
Use then check

 One ought not use `clone` variable when it is NULL.

Denisss025/wsfcpp,Denisss025/wsfcpp,Denisss025/wsfcpp,Denisss025/wsfcpp,Denisss025/wsfcpp,Denisss025/wsfcpp,Denisss025/wsfcpp