Fix double free in rate plugin

Fixed double free in rate plugin (bug#1937).

diff --git a/src/pcm/pcm_rate.c b/src/pcm/pcm_rate.c
index 083819b890b6a8a7b223e82eafb131924e90ae55..95f43dfba0f2df999fcf36d8330d8fb902e3e38a 100644 (file)
--- a/src/pcm/pcm_rate.c
+++ b/src/pcm/pcm_rate.c
@@ -619,6 +619,7 @@ static int snd_pcm_rate_hw_free(snd_pcm_t *pcm)
                rate->sareas = NULL;
        }
        free(rate->old_sample);
+       rate->old_sample = NULL;
        return snd_pcm_hw_free(rate->gen.slave);
 }