Thanks for the patch, I have applied it with r22359.

For your information:

5 messages of 1645 in ru don't use some variables while en uses them:

• cascadeprotected
• cascadeprotectedwarning
• revdelete-selected
• logdelete-selected
• protect-cascadeon

Thank you, but Russian plural form for words is not simple, so I can not use PLURAL in messages without numbers. Example:

"The page was visited $1 {{PLURAL:$1|time|times}}"
is OK

but

"The page was visited {{PLURAL:$1|one time|many times}}."
is untranslateable with current Russian plural function with 3 plural forms, so I did not use variables.

I think to change Russian plural function to 4 plural forms, but it is not common in Russian software localization.