Xcode: fix project cleaning.
Xcode: fix project cleaning.

mesonbuild/meson,jpakkane/meson,mesonbuild/meson,mesonbuild/meson,jpakkane/meson,mesonbuild/meson,QuLogic/meson,QuLogic/meson,mesonbuild/meson,mesonbuild/meson,mesonbuild/meson,pexip/meson,pexip/meson,pexip/meson,QuLogic/meson,pexip/meson,QuLogic/meson,jpakkane/meson,mesonbuild/meson,jpakkane/meson,QuLogic/meson,mesonbuild/meson,pexip/meson,QuLogic/meson,pexip/meson,pexip/meson,jpakkane/meson,QuLogic/meson,QuLogic/meson,QuLogic/meson,pexip/meson,jpakkane/meson,jpakkane/meson,pexip/meson,mesonbuild/meson,jpakkane/meson,jpakkane/meson,pexip/meson