fix possible memleak in spd_get_default_address in libspeechd.c
fix possible memleak in spd_get_default_address in libspeechd.c

Fix memleak in spd_get_default_address funktion (libspeechd.c)

When the funktion can't get an useful address it simply sets the pointer
to NULL but does not free the allocated memory.

Reviewed-by: Christopher Brannon <711c73f64afdce07b7e38039a96d2224209e9a6c@the-brannons.com>

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