misc: fix update-vulkan-gir.py --extra-cpp-args argument parsing
It was not possible to pass more than one argument with --extra-cpp-args
.
This now works:
--extra-cpp-args='-I/home/Philippe/rust/pycparser/utils/fake_libc_include -U_WIN32'
It would previously fail because it was seen as one arg by the process class.
Edited by Philippe Renon