Bug#951900: sphinxbase FTBFS with doxygen 1.8.16

[Adrian Bunk]

Source: sphinxbase
Version: 0.8+5prealpha+1-7
Severity: serious
Tags: ftbfs

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/sphinxbase.html

...
/usr/bin/python3.8 ../../doc/doxy2swig.py -n xml/index.xml pydoc.i
parsing file: xml/cmd__ln_8h.xml
Traceback (most recent call last):
  File "../../doc/doxy2swig.py", line 488, in <module>
    main()
  File "../../doc/doxy2swig.py", line 484, in main
    convert(args[0], args[1], not options.func_def, options.quiet)
  File "../../doc/doxy2swig.py", line 463, in convert
    p.generate()
  File "../../doc/doxy2swig.py", line 123, in generate
    self.parse(self.xmldoc)
  File "../../doc/doxy2swig.py", line 132, in parse
    pm(node)
  File "../../doc/doxy2swig.py", line 162, in parse_Element
    handlerMethod(node)
  File "../../doc/doxy2swig.py", line 413, in do_doxygenindex
    p.generate()
  File "../../doc/doxy2swig.py", line 123, in generate
    self.parse(self.xmldoc)
  File "../../doc/doxy2swig.py", line 132, in parse
    pm(node)
  File "../../doc/doxy2swig.py", line 164, in parse_Element
    self.generic_parse(node)
  File "../../doc/doxy2swig.py", line 209, in generic_parse
    self.parse(n)
  File "../../doc/doxy2swig.py", line 132, in parse
    pm(node)
  File "../../doc/doxy2swig.py", line 162, in parse_Element
    handlerMethod(node)
  File "../../doc/doxy2swig.py", line 248, in do_compounddef
    self.parse(n)
  File "../../doc/doxy2swig.py", line 132, in parse
    pm(node)
  File "../../doc/doxy2swig.py", line 162, in parse_Element
    handlerMethod(node)
  File "../../doc/doxy2swig.py", line 356, in do_sectiondef
    self.generic_parse(node)
  File "../../doc/doxy2swig.py", line 209, in generic_parse
    self.parse(n)
  File "../../doc/doxy2swig.py", line 132, in parse
    pm(node)
  File "../../doc/doxy2swig.py", line 162, in parse_Element
    handlerMethod(node)
  File "../../doc/doxy2swig.py", line 302, in do_memberdef
    arg_type = n.getElementsByTagName('type')[0]
IndexError: list index out of range
make[3]: *** [Makefile:603: pydoc.i] Error 1