opusparse: fix uninitialized-warning
diff --git a/ext/opus/gstopusparse.c b/ext/opus/gstopusparse.c
index 80fb552..8196f54 100644
--- a/ext/opus/gstopusparse.c
+++ b/ext/opus/gstopusparse.c
@@ -280,7 +280,7 @@
 
   gint64 duration;
   gint64 frame_duration;
-  gint nframes;
+  gint nframes = 0;
   guint8 toc;
 
   if (len < 1)