removed spurious substantival possessives created from empty strings in NounFin in the presence of ProDrop

lib/src/finnish/ExtraFin.gf

@@ -254,6 +254,7 @@ concrete ExtraFin of ExtraFinAbs = CatFin **
 ---- TODO maybe squeeze s2 between the fin and inf (but this is subtle)
 ----   sinua olen rakastanut minä -> sinua olen minä rakastanus
 -- advantage though: works for all V2 verbs, need not be transitive
+---- TODO: agr should be to the agent
 
   PassAgentVPSlash vp np = {
       s = {s = vp.s.s ; h = vp.s.h ; p = vp.s.p ; sc = npform2subjcase vp.c2.c} ;