baseparse: Fix check for update_interval
update_interval may be -1
https://bugzilla.gnome.org/show_bug.cgi?id=793284
diff --git a/libs/gst/base/gstbaseparse.c b/libs/gst/base/gstbaseparse.c
index 34e85b1..5c44454 100644
--- a/libs/gst/base/gstbaseparse.c
+++ b/libs/gst/base/gstbaseparse.c
@@ -4105,8 +4105,8 @@
if (!gst_base_parse_get_duration (parse, GST_FORMAT_TIME, &duration)
|| duration == -1) {
/* seekable if we still have a chance to get duration later on */
- seekable =
- parse->priv->upstream_seekable && parse->priv->update_interval;
+ seekable = parse->priv->upstream_seekable &&
+ (parse->priv->update_interval > 0);
} else {
seekable = parse->priv->upstream_seekable;
GST_LOG_OBJECT (parse, "already determine upstream seekabled: %d",