Fix warnings "has virtual functions and accessible non-virtual destructor [-Wnon-virtual-dtor]" #1534
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When using
-Weffc++
flag, see afc5bc9there are some
"warning: ‘class vpUKSigmaDrawerAbstract’ has virtual functions and accessible non-virtual destructor [-Wnon-virtual-dtor]"
warnings.This PR fixes warnings detected with
-Wnon-virtual-dtor
flag.