S29-num/roots.t:  update error message, avoid needless eval.
S29-num/roots.t:  update error message, avoid needless eval.


git-svn-id: 53605643c415f7495558be95614cf14171f1db78@20931 c213334d-75ef-0310-aa23-eaa082d1ae64

perl6/roast,laben/roast,zostay/roast,zostay/roast,laben/roast,dogbert17/roast,niner/roast,cygx/roast,bitrauser/roast,zostay/roast,b2gills/roast,niner/roast,dankogai/roast,b2gills/roast,cygx/roast,skids/roast,dankogai/roast,bitrauser/roast,niner/roast,dogbert17/roast,dankogai/roast,cygx/roast,skids/roast,b2gills/roast,skids/roast,laben/roast