message: Fix error message on invalid seam finder parameter
diff: @@ -55,7 +55,7 @@ Ptr<SeamFinder> SeamFinder::createDefault(int type)
  return makePtr<VoronoiSeamFinder>();
  if (type == DP_SEAM)
  return makePtr<DpSeamFinder>();
  - CV_Error(Error::StsBadArg, "unsupported exposure compensation method");
  + CV_Error(Error::StsBadArg, "unsupported seam finder method");
  }
  