fix void * arithmatic warning

diff --git a/src/switch_ivr_async.c b/src/switch_ivr_async.c
index f1ff4ae3990f1ea9d57d7ac3482eaacdf789a657..40852b97680887cb505b954a62176616c7ba69d3 100644 (file)
--- a/src/switch_ivr_async.c
+++ b/src/switch_ivr_async.c
@@ -845,7 +845,7 @@ static switch_bool_t write_displace_callback(switch_media_bug_t *bug, void *user
                        } else {
                                st = switch_core_file_read(&dh->fh, rframe->data, &len);
                                if (len < rframe->samples) {
-                                       memset(rframe->data + len * 2, 0, rframe->datalen - len * 2);
+                                       memset((char *)rframe->data + len * 2, 0, rframe->datalen - len * 2);
                                }
                        }