Reply links don't hide on localized sites

The new feature to hide reply links on comments doesn't work on localized sites. Because the link title in $vars['links'] is already localized, the regex finds nothing, and the link is not hidden. (What a pity we don't have a better option than theme layer for this...)

Wrapping the 'reply' string into t() fixes this. (Patch tested on my Czech site, works fine with localized 'odpovědět' [has multibyte chars even]).