fix a signedness warning

diff --git a/src/pcm/pcm_direct.c b/src/pcm/pcm_direct.c
index b4981ab7e04d0bdaadf8d03e0662321d1b414777..755ae1677313172e882f1093852ab7b47bf1572a 100644 (file)
--- a/src/pcm/pcm_direct.c
+++ b/src/pcm/pcm_direct.c
@@ -885,7 +885,7 @@ int snd_pcm_direct_initialize_slave(snd_pcm_direct_t *dmix, snd_pcm_t *spcm, str
                        SND_PCM_FORMAT_S24_3LE,
                };
                snd_pcm_format_t format;
-               int i;
+               unsigned int i;
 
                for (i = 0; i < sizeof dmix_formats / sizeof dmix_formats[0]; ++i) {
                        format = dmix_formats[i];