Fix crash in the completer model
Fix crash in the completer model

andreikop/qutepart,hlamer/qutepart,Aldenis2112/qutepart,hlamer/qutepart,hlamer/qutepart,Aldenis2112/qutepart,hlamer/qutepart,andreikop/qutepart,Aldenis2112/qutepart,andreikop/qutepart,hlamer/qutepart,andreikop/qutepart,hlamer/qutepart,Aldenis2112/qutepart,andreikop/qutepart,Aldenis2112/qutepart,Aldenis2112/qutepart,hlamer/qutepart,Aldenis2112/qutepart,hlamer/qutepart,hlamer/qutepart,andreikop/qutepart,hlamer/qutepart,andreikop/qutepart,Aldenis2112/qutepart,andreikop/qutepart,hlamer/qutepart,Aldenis2112/qutepart,Aldenis2112/qutepart,Aldenis2112/qutepart,andreikop/qutepart,andreikop/qutepart,andreikop/qutepart