License confusion in three files

Looking at the following files, their source headers are a bit confusing:

• gst-python-1.19.2/gi/overrides/GstPbutils.py
• gst-python-1.19.2/gi/overrides/Gst.py
• gst-python-1.19.2/testsuite/common.py

These files have LGPL-2.1 headers, aking to much of gstplugins:

# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program; if not, write to the
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.

but then tucked under that header is a small GPL-3.0 statement:

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version. 

This seemed unusual, so I thought I would point it out.