[Bug 787869] New: audiovisualizer: mutex unlock added in error case

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=787869

            Bug ID: 787869
           Summary: audiovisualizer: mutex unlock added in error case
    Classification: Platform
           Product: GStreamer
           Version: 1.13.x
                OS: All
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: p.srinivas at samsung.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 360023
  --> https://bugzilla.gnome.org/attachment.cgi?id=360023&action=edit
attached patch

Hi,

In gst_audio_visualizer_chain function.

Jumps out of a held mutex without unlocking it.

if (!klass->render (scope, inbuf, &outframe)) {
        ret = GST_FLOW_ERROR;
        gst_video_frame_unmap (&outframe);
        goto beach;

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