re #234. Fixed bug used !empty() instead of isset() to check if $lang is specified or not.
re #234. Fixed bug used !empty() instead of isset() to check if $lang is specified or not.

shashank19gaurav/tatoeba2,shashank19gaurav/tatoeba2,shashank19gaurav/tatoeba2,Tatoeba/tatoeba2,Tatoeba/tatoeba2,shashank19gaurav/tatoeba2,Tatoeba/tatoeba2,Tatoeba/tatoeba2,Tatoeba/tatoeba2