Fix error C2436 in vlp_grabber.cpp
Fix error C2436 in vlp_grabber.cpp

Fix error C2436.
The call way to constructor of base class is wrong.
That triggered the error C2436.
"error C2436: '{ctor}': Member function or nested class in constructor
initializer list"

drmateo/pcl,damienjadeduff/pcl,drmateo/pcl,ipa-rmb/pcl,stefanbuettner/pcl,damienjadeduff/pcl,damienjadeduff/pcl,ipa-rmb/pcl,mikhail-matrosov/pcl,mikhail-matrosov/pcl,lebronzhang/pcl,stefanbuettner/pcl,mikhail-matrosov/pcl,ipa-rmb/pcl,mikhail-matrosov/pcl,lebronzhang/pcl,lebronzhang/pcl,ipa-rmb/pcl,stefanbuettner/pcl,drmateo/pcl,lebronzhang/pcl,mikhail-matrosov/pcl,lebronzhang/pcl,damienjadeduff/pcl,drmateo/pcl,drmateo/pcl,stefanbuettner/pcl,stefanbuettner/pcl,ipa-rmb/pcl,damienjadeduff/pcl