[Bug 762766] New: PyMethodDef _gi_gst_functions array needs null object at the end

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=762766

            Bug ID: 762766
           Summary: PyMethodDef _gi_gst_functions array needs null object
                    at the end
    Classification: Platform
           Product: GStreamer
           Version: unspecified
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-python
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: hanno at hboeck.de
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 322521
  --> https://bugzilla.gnome.org/attachment.cgi?id=322521&action=edit
patch to null-terminate PyMethodDef array

PyMethodDef arrays are supposed to end with an entry full of NULL/0 values.
This is missing in gst-python in the file gstmodule.c.

This causes out of bounds memory reads which can be seen / tested by compiling
gst-python with address sanitizer (-fsanitize=address in CFLAGS/LDFLAGS).

Attached patch fixes this issue.

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