message: core(persistence): disable checks for base64 streams
diff: @@ -59,14 +59,14 @@ char* icvGets( CvFileStorage* fs, char* str, int maxCount )
  }
  str[j++] = '\0';
  fs->strbufpos = i;
  - if (maxCount > 256)
  + if (maxCount > 256 && !(fs->flags & cv::FileStorage::BASE64))
  CV_Assert(j < maxCount - 1 && "OpenCV persistence doesn't support very long lines");
  return j > 1 ? str : 0;
  }
  if( fs->file )
  {
  char* ptr = fgets( str, maxCount, fs->file );
  - if (ptr && maxCount > 256)
  + if (ptr && maxCount > 256 && !(fs->flags & cv::FileStorage::BASE64))
  {
  size_t sz = strnlen(ptr, maxCount);
  CV_Assert(sz < (size_t)(maxCount - 1) && "OpenCV persistence doesn't support very long lines");
  @@ -77,7 +77,7 @@ char* icvGets( CvFileStorage* fs, char* str, int maxCount )
  if( fs->gzfile )
  {
  char* ptr = gzgets( fs->gzfile, str, maxCount );
  - if (ptr && maxCount > 256)
  + if (ptr && maxCount > 256 && !(fs->flags & cv::FileStorage::BASE64))
  {
  size_t sz = strnlen(ptr, maxCount);
  CV_Assert(sz < (size_t)(maxCount - 1) && "OpenCV persistence doesn't support very long lines");
  