message: imgcodecs(png): resolve ASAN issue with vars scope and setjmp() call
diff: @@ -228,12 +228,12 @@ bool PngDecoder::readData( Mat& img )
  uchar** buffer = _buffer;
  int color = img.channels() > 1;
  - if( m_png_ptr && m_info_ptr && m_end_info && m_width && m_height )
  - {
  png_structp png_ptr = (png_structp)m_png_ptr;
  png_infop info_ptr = (png_infop)m_info_ptr;
  png_infop end_info = (png_infop)m_end_info;
  + if( m_png_ptr && m_info_ptr && m_end_info && m_width && m_height )
  + {
  if( setjmp( png_jmpbuf ( png_ptr ) ) == 0 )
  {
  int y;
  