Added virtual destructor to PoseRenderer (#855)

include/openpose/pose/poseRenderer.hpp

@@ -12,6 +12,8 @@ namespace op
     public:
         PoseRenderer(const PoseModel poseModel);
 
+        virtual ~PoseRenderer();
+
         virtual void initializationOnThread(){};
 
         virtual std::pair<int, std::string> renderPose(Array<float>& outputData, const Array<float>& poseKeypoints,

src/openpose/pose/poseRenderer.cpp

@@ -57,4 +57,8 @@ namespace op
         mPartIndexToName{createPartToName(poseModel)}
     {
     }
+
+    PoseRenderer::~PoseRenderer()
+    {
+    }
 }