Fix @DrawAfter to return the wrapped function's return value.
Fix @DrawAfter to return the wrapped function's return value.

pbfy0/visvis,chrisidefix/visvis,chiluf/visvis.dev,pbfy0/visvis.dev,AlanZatarain/visvis.dev,pbfy0/visvis,Alwnikrotikz/visvis.dev,almarklein/visvis.dev,pbfy0/visvis,chrisidefix/visvis,Alwnikrotikz/visvis,chrisidefix/visvis,Alwnikrotikz/visvis,Alwnikrotikz/visvis