fix uninitialized pointer in PCLVisualizer
fix uninitialized pointer in PCLVisualizer

git-svn-id: 5398946ba177a3e438c2dae55e2cdfc2fb96c905@1802 a9d63959-f2ad-4865-b262-bf0e56cfafb6

mschoeler/pcl,mschoeler/pcl,chenxingzhe/pcl,RufaelDev/pcc-mp3dg,Nerei/pcl_old_repo,3dtof/pcl,jakobwilm/pcl,srbhprajapati/pcl,soulsheng/pcl,the-glu/pcl,stefanbuettner/pcl,MMiknis/pcl,shyamalschandra/pcl,stfuchs/pcl,3dtof/pcl,drmateo/pcl,RufaelDev/pcc-mp3dg,kanster/pcl,wgapl/pcl,nikste/pcl,ResByte/pcl,ipa-rmb/pcl,jakobwilm/pcl,MMiknis/pcl,krips89/pcl_newfeatures,mikhail-matrosov/pcl,zhangxaochen/pcl,zavataafnan/pcl-truck,mschoeler/pcl,fanxiaochen/mypcltest,v4hn/pcl,ipa-rmb/pcl,chatchavan/pcl,lebronzhang/pcl,fskuka/pcl,lebronzhang/pcl,KevenRing/vlp,chenxingzhe/pcl,fanxiaochen/mypcltest,zavataafnan/pcl-truck,lydhr/pcl,Tabjones/pcl,chenxingzhe/pcl,pkuhto/pcl,jeppewalther/kinfu_segmentation,srbhprajapati/pcl,msalvato/pcl_kinfu_highres,locnx1984/pcl,zavataafnan/pcl-truck,simonleonard/pcl,v4hn/pcl,soulsheng/pcl,stefanbuettner/pcl,shangwuhencc/pcl,fanxiaochen/mypcltest,wgapl/pcl,shangwuhencc/pcl,Tabjones/pcl,zhangxaochen/pcl,raydtang/pcl,the-glu/pcl,damienjadeduff/pcl,chatchavan/pcl,shivmalhotra/pcl,jakobwilm/pcl,raydtang/pcl,lydhr/pcl,LZRS/pcl,ResByte/pcl,wgapl/pcl,cascheberg/pcl,simonleonard/pcl,DaikiMaekawa/pcl,LZRS/pcl,lebronzhang/pcl,closerbibi/pcl,Nerei/pcl_old_repo,nh2/pcl,locnx1984/pcl,lydhr/pcl,lydhr/pcl,RufaelDev/pcc-mp3dg,msalvato/pcl_kinfu_highres,the-glu/pcl,shivmalhotra/pcl,closerbibi/pcl,KevenRing/vlp,pkuhto/pcl,damienjadeduff/pcl,v4hn/pcl,MMiknis/pcl,nikste/pcl,krips89/pcl_newfeatures,damienjadeduff/pcl,sbec/pcl,shyamalschandra/pcl,soulsheng/pcl,kanster/pcl,ipa-rmb/pcl,stefanbuettner/pcl,mikhail-matrosov/pcl,the-glu/pcl,mikhail-matrosov/pcl,mikhail-matrosov/pcl,shivmalhotra/pcl,shyamalschandra/pcl,v4hn/pcl,soulsheng/pcl,ResByte/pcl,stfuchs/pcl,KevenRing/vlp,lydhr/pcl,locnx1984/pcl,kanster/pcl,shyamalschandra/pcl,ipa-rmb/pcl,sbec/pcl,cascheberg/pcl,shivmalhotra/pcl,MMiknis/pcl,raydtang/pcl,sbec/pcl,fanxiaochen/mypcltest,KevenRing/pcl,ipa-rmb/pcl,zavataafnan/pcl-truck,raydtang/pcl,Nerei/pcl_old_repo,lebronzhang/pcl,LZRS/pcl,locnx1984/pcl,stefanbuettner/pcl,krips89/pcl_newfeatures,zhangxaochen/pcl,pkuhto/pcl,closerbibi/pcl,cascheberg/pcl,Tabjones/pcl,zavataafnan/pcl-truck,starius/pcl,sbec/pcl,closerbibi/pcl,chatchavan/pcl,fskuka/pcl,srbhprajapati/pcl,starius/pcl,simonleonard/pcl,mschoeler/pcl,jakobwilm/pcl,Nerei/pcl_old_repo,shivmalhotra/pcl,lebronzhang/pcl,LZRS/pcl,sbec/pcl,zhangxaochen/pcl,mikhail-matrosov/pcl,locnx1984/pcl,msalvato/pcl_kinfu_highres,msalvato/pcl_kinfu_highres,stefanbuettner/pcl,Tabjones/pcl,wgapl/pcl,jeppewalther/kinfu_segmentation,shangwuhencc/pcl,raydtang/pcl,zhangxaochen/pcl,the-glu/pcl,KevenRing/pcl,mschoeler/pcl,KevenRing/pcl,fskuka/pcl,DaikiMaekawa/pcl,kanster/pcl,nh2/pcl,drmateo/pcl,srbhprajapati/pcl,pkuhto/pcl,shangwuhencc/pcl,srbhprajapati/pcl,ResByte/pcl,krips89/pcl_newfeatures,DaikiMaekawa/pcl,chenxingzhe/pcl,KevenRing/vlp,starius/pcl,shangwuhencc/pcl,stfuchs/pcl,krips89/pcl_newfeatures,cascheberg/pcl,stfuchs/pcl,nikste/pcl,fskuka/pcl,LZRS/pcl,simonleonard/pcl,Tabjones/pcl,DaikiMaekawa/pcl,KevenRing/vlp,closerbibi/pcl,KevenRing/pcl,simonleonard/pcl,wgapl/pcl,fanxiaochen/mypcltest,starius/pcl,MMiknis/pcl,starius/pcl,jeppewalther/kinfu_segmentation,jeppewalther/kinfu_segmentation,jakobwilm/pcl,drmateo/pcl,DaikiMaekawa/pcl,KevenRing/pcl,nikste/pcl,drmateo/pcl,drmateo/pcl,soulsheng/pcl,stfuchs/pcl,v4hn/pcl,jeppewalther/kinfu_segmentation,shyamalschandra/pcl,damienjadeduff/pcl,kanster/pcl,RufaelDev/pcc-mp3dg,3dtof/pcl,cascheberg/pcl,nh2/pcl,3dtof/pcl,3dtof/pcl,pkuhto/pcl,RufaelDev/pcc-mp3dg,fskuka/pcl,msalvato/pcl_kinfu_highres,chatchavan/pcl,ResByte/pcl,nh2/pcl,chenxingzhe/pcl,nikste/pcl,damienjadeduff/pcl