[fix] change undefined variable to the correct one
Signed-off-by:Damian Zajkowski <damian.zajkowski@rst.com.pl>
[fix] secure fix, to prevent access to undefined array index 
Signed-off-by:Damian Zajkowski <damian.zajkowski@rst.com.pl>
[fix] uproszczenie i poprawienie logiki dodawania suffiksów liczby mnogiej
Signed-off-by:Damian Zajkowski <damian.zajkowski@rst.com.pl>
Merge pull request #2655 from DamianZ/master

bug fixes in languages