message: Report failure if loadPigg failes
  Should be a fix for
diff: @@ -201,7 +201,10 @@ int main(int argc, char **argv)
  const QString pigg_name = parser.positionalArguments().constFirst();
  PiggFile hdr;
  - loadPigg(pigg_name,hdr);
  + if(!loadPigg(pigg_name,hdr))
  + {
  + qCritical() << "Failed to read"<<pigg_name;
  + }
  if(parser.isSet("l")) {
  dumpFileList(hdr);
  }
  