Fix binary compatibility of opencv_ml

modules/ml/include/opencv2/ml/ml.hpp

@@ -505,7 +505,7 @@ public:
                             CvParamGrid degreeGrid = CvSVM::get_default_grid(CvSVM::DEGREE),
                             bool balanced=false);
     CV_WRAP virtual float predict( const cv::Mat& sample, bool returnDFVal=false ) const;
-    CV_WRAP_AS(predict_all) virtual void predict( cv::InputArray samples, cv::OutputArray results ) const;
+    CV_WRAP_AS(predict_all) void predict( cv::InputArray samples, cv::OutputArray results ) const;
 
     CV_WRAP virtual int get_support_vector_count() const;
     virtual const float* get_support_vector(int i) const;