Fix comboBoxGetModel, it previously did an unchecked downcast
Fix comboBoxGetModel, it previously did an unchecked downcast

darcs-hash:20070727135408-adfee-339602286735d3d456b0017f860dc0a527ea71b7.gz

thiagoarrais/gtk2hs,thiagoarrais/gtk2hs,thiagoarrais/gtk2hs