directory_open_xmp compile issue on macOS

Hi folks! I'm having trouble compiling macOS builds on master for the last few days. I'm getting this error:

07:50:34     default: [ 67%] Building CXX object pcbnew/CMakeFiles/pcbnew_kiface_objects.dir/menubar_pcb_editor.cpp.o
07:50:39     default: /vagrant/build/kicad/src/kicad/pcbnew/menubar_pcb_editor.cpp:415:32: error: use of undeclared identifier 'directory_open_xmp'; did you mean 'directory_open_xpm'?
07:50:39     default:                                directory_open_xmp );
07:50:39     default:                                ^~~~~~~~~~~~~~~~~~
07:50:39     default:                                directory_open_xpm
07:50:39     default: /vagrant/build/kicad/src/kicad/bitmaps_png/include/bitmaps_png/bitmaps_list.h:131:16:
07:50:39     default:  note: 'directory_open_xpm' declared here
07:50:39     default: EXTERN_BITMAP( directory_open_xpm )
07:50:39     default:                ^
07:50:41     default: 1 error generated.

It appears that there's a single instance of directory_open_xmp in an APPLE ifdef.

Assuming it's meant to be directory_open_xpm now, I have an MR on its way.

KiCad Version

It's happening for me on c73c20d0.