snd_pcm_set_chmap() leaks the memory returned from snd_pcm_get_chmap() without releasing. Add the missing free() call as well as a slight code refactoring.

Reported-by: Conrad Jones BugLink: https://github.com/alsa-project/alsa-lib/pull/11 Fixes: d20e24e5d161 ("chmap: Always succeed setting the map to what it already is") Signed-off-by: Takashi Iwai tiwai@suse.de --- src/pcm/pcm.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/pcm/pcm.c b/src/pcm/pcm.c index 178d43875f00..d6bf31ac7ae3 100644 --- a/src/pcm/pcm.c +++ b/src/pcm/pcm.c @@ -8099,8 +8099,13 @@ snd_pcm_chmap_t *snd_pcm_get_chmap(snd_pcm_t *pcm) */ int snd_pcm_set_chmap(snd_pcm_t *pcm, const snd_pcm_chmap_t *map) { - const snd_pcm_chmap_t *oldmap = snd_pcm_get_chmap(pcm); - if (oldmap && chmap_equal(oldmap, map)) + const snd_pcm_chmap_t *oldmap; + int nochange; + + oldmap = snd_pcm_get_chmap(pcm); + nochange = (oldmap && chmap_equal(oldmap, map)); + free((void *)oldmap); + if (nochange) return 0;

if (!pcm->ops->set_chmap)