Bug fix - KeyError on subproject without default options
Bug fix - KeyError on subproject without default options

QuLogic/meson,becm/meson,ernestask/meson,aaronp24/meson,MathieuDuponchelle/meson,jeandet/meson,aaronp24/meson,jpakkane/meson,wberrier/meson,pexip/meson,QuLogic/meson,jpakkane/meson,ernestask/meson,trhd/meson,becm/meson,QuLogic/meson,thiblahute/meson,trhd/meson,fmuellner/meson,QuLogic/meson,aaronp24/meson,mesonbuild/meson,wberrier/meson,ernestask/meson,rhd/meson,jeandet/meson,rhd/meson,ernestask/meson,fmuellner/meson,pexip/meson,jpakkane/meson,thiblahute/meson,rhd/meson,wberrier/meson,trhd/meson,rhd/meson,jpakkane/meson,trhd/meson,pexip/meson,thiblahute/meson,jpakkane/meson,mesonbuild/meson,becm/meson,rhd/meson,becm/meson,mesonbuild/meson,QuLogic/meson,pexip/meson,fmuellner/meson,pexip/meson,mesonbuild/meson,mesonbuild/meson,fmuellner/meson,wberrier/meson,QuLogic/meson,ernestask/meson,MathieuDuponchelle/meson,QuLogic/meson,fmuellner/meson,ernestask/meson,ernestask/meson,thiblahute/meson,trhd/meson,thiblahute/meson,thiblahute/meson,fmuellner/meson,pexip/meson,MathieuDuponchelle/meson,aaronp24/meson,jpakkane/meson,pexip/meson,becm/meson,wberrier/meson,MathieuDuponchelle/meson,jeandet/meson,jpakkane/meson,jpakkane/meson,jeandet/meson,aaronp24/meson,trhd/meson,thiblahute/meson,mesonbuild/meson,wberrier/meson,mesonbuild/meson,MathieuDuponchelle/meson,jeandet/meson,mesonbuild/meson,aaronp24/meson,jeandet/meson,MathieuDuponchelle/meson,jpakkane/meson,mesonbuild/meson,jeandet/meson,pexip/meson,trhd/meson,thiblahute/meson,fmuellner/meson,aaronp24/meson,ernestask/meson,fmuellner/meson,trhd/meson,QuLogic/meson,becm/meson,ernestask/meson,becm/meson,thiblahute/meson,rhd/meson,rhd/meson,aaronp24/meson,pexip/meson,MathieuDuponchelle/meson,becm/meson,rhd/meson,becm/meson,becm/meson,fmuellner/meson,trhd/meson,pexip/meson,wberrier/meson,MathieuDuponchelle/meson,jeandet/meson,mesonbuild/meson,aaronp24/meson,MathieuDuponchelle/meson,jeandet/meson,wberrier/meson,QuLogic/meson