Unclear meson error when trying to build plugins on macOS

As of commit d922088e on MacOS:

$ make tests/tcg/plugins/libinsn.dylib.p/libinsn.dylib.symbols
[1/1] Generating symbol file tests/tcg/plugins/libinsn.dylib.p/libinsn.dylib.symbols
FAILED: tests/tcg/plugins/libinsn.dylib.p/libinsn.dylib.symbols 
build.dir/pyvenv/bin/meson --internal symbolextractor build.dir tests/tcg/plugins/libinsn.dylib tests/tcg/plugins/libinsn.dylib tests/tcg/plugins/libinsn.dylib.p/libinsn.dylib.symbols 
Traceback (most recent call last):
  File "build.dir/pyvenv/bin/meson", line 8, in <module>
    sys.exit(main())
             ~~~~^^
  File "/opt/homebrew/lib/python3.13/site-packages/mesonbuild/mesonmain.py", line 293, in main
    return run(sys.argv[1:], launcher)
  File "/opt/homebrew/lib/python3.13/site-packages/mesonbuild/mesonmain.py", line 281, in run
    return run_script_command(args[1], args[2:])
  File "/opt/homebrew/lib/python3.13/site-packages/mesonbuild/mesonmain.py", line 222, in run_script_command
    return module.run(script_args)
           ~~~~~~~~~~^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.13/site-packages/mesonbuild/scripts/symbolextractor.py", line 319, in run
    gen_symbols(libfile, impfile, outfile, options.cross_host)
    ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.13/site-packages/mesonbuild/scripts/symbolextractor.py", line 276, in gen_symbols
    osx_syms(libfilename, outfilename)
    ~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.13/site-packages/mesonbuild/scripts/symbolextractor.py", line 136, in osx_syms
    result = [arr[match + 2], arr[match + 5]] # Libreoffice stores all 5 lines but the others seem irrelevant.
                  ^^^^^
UnboundLocalError: cannot access local variable 'match' where it is not associated with a value
ninja: build stopped: subcommand failed.
make: *** [run-ninja] Error 1