revert back to returning from Image::EIO_FromSVG early on parsing error(s)
revert back to returning from Image::EIO_FromSVG early on parsing error(s)

tomhughes/node-mapnik,tomhughes/node-mapnik,mapnik/node-mapnik,mapnik/node-mapnik,mapnik/node-mapnik,mapnik/node-mapnik,tomhughes/node-mapnik,mapnik/node-mapnik,tomhughes/node-mapnik,tomhughes/node-mapnik