message: ml: fix check in SVM::trainAuto
diff: @@ -1451,7 +1451,7 @@ public:
  sortSamplesByClasses( _samples, _responses, sidx_all, class_ranges );
  //check that while cross-validation there were the samples from all the classes
  - if( class_ranges[class_count] <= 0 )
  + if ((int)class_ranges.size() < class_count + 1)
  CV_Error( CV_StsBadArg, "While cross-validation one or more of the classes have "
  "been fell out of the sample. Try to reduce <Params::k_fold>" );
  