alsa: don't leak memory

diff --git a/linux/sndout_alsa.c b/linux/sndout_alsa.c
index 95cc391..f1d9ca3 100644 (file)
--- a/linux/sndout_alsa.c
+++ b/linux/sndout_alsa.c
@@ -72,9 +72,7 @@ int sndout_alsa_start(int rate_, int stereo)
        snd_pcm_hw_params_get_period_size(hwparams, &period_size, NULL);
        snd_pcm_hw_params_get_channels(hwparams, &channels);
 
-       silent_period = realloc(silent_period, period_size * 2 * channels);
-       if (silent_period != NULL)
-               memset(silent_period, 0, period_size * 2 * channels);
+       silent_period = calloc(period_size * channels, 2);
 
        ret = snd_pcm_prepare(handle);
        if (ret != 0) {
@@ -104,6 +102,9 @@ void sndout_alsa_stop(void)
        int ret = snd_pcm_drop(handle);
        if (ret != 0)
                fprintf(stderr, PFX "snd_pcm_drop failed: %d\n", ret);
+
+       free(silent_period);
+       silent_period = NULL;
 }
 
 void sndout_alsa_wait(void)