empathy_string_replace_escaped: use gsize instead of gssize
empathy_string_replace_escaped: use gsize instead of gssize

Avoid signed/unsigned comparaison in the for loop.

GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets,Distrotech/telepathy-account-widgets,GNOME/telepathy-account-widgets