gpslogger: catch broken xml file error

[purarue]

File "/home/sean/.local/lib/python3.11/site-packages/gpxpy/parser.py", line 146, in parse
    raise mod_gpx.GPXXMLSyntaxException('Error parsing XML: %s' % str(e), e)
gpxpy.gpx.GPXXMLSyntaxException: Error parsing XML: Extra content at the end of the document, line 39, column 22 (<string>, line 39)

not sure exactly what the cause for it is, but sometimes if my laptop loses power (so it crashes) it adds a bunch of weird EOF characters to the end of the file, and this ends up breaking the parser.

I can manually fix that, just thought Id prevent any broken XML files from crashing the parser.

[karlicoss]

Sorry, missed the notification! I guess ideally we'd make it yield Exception or something instead, but for now doesn't hurt to merge as is. Thanks!