init must only initialise preds after undef is made. don't give annoying messages in s or t, just continue git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@467 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
init must only initialise preds after undef is made. don't give annoying messages in s or t, just continue git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@467 b08c6af1-5177-4d33-ba66-4b1c6b8b522a