Without the change, I get this error:
(cd '.../tmp-portaudio-x86_64-w64-mingw32.static/portaudio' && patch -p1 -u) < ./src/portaudio-1-fixes.patch
patching file configure.in
patching file src/hostapi/dsound/pa_win_ds.c
patching file src/hostapi/wdmks/pa_win_wdmks.c
patching file configure.in
patching file src/hostapi/wasapi/pa_win_wasapi.c
Hunk #1 FAILED at 49 (different line endings).
1 out of 1 hunk FAILED -- saving rejects to file src/hostapi/wasapi/pa_win_wasapi.c.rej