HttpsUrlAvailable: version 3.0.3: HOMEPAGE: HTTPS url available: http://www.libpng.org/pub/png/apps/pngcheck.html -> https://www.libpng.org/pub/png/apps/pngcheck.html
  HttpsUrlAvailable: version 3.0.3: SRC_URI: HTTPS url available: http://www.libpng.org/pub/png/src/pngcheck-3.0.3.tar.gz -> https://www.libpng.org/pub/png/src/pngcheck-3.0.3.tar.gz