memory leak in ibmtts.c
memory leak in ibmtts.c

The function ibmtts_search_for_sound from ibmtts.c search for a file
and returns a pointer to its name if it is found.
The function does not free the string fileName in a correct way if the
file is not found

Reviewed-by: Andrei Kholodnyi <8ed355542eeb21dc16259915650192a25bd4bf1a@gmail.com>

razr/speechd,razr/speechd,razr/speechd,razr/speechd