SCons: Fix build error on invalid module folders
SCons: Fix build error on invalid module folders

groud/godot,BastiaanOlij/godot,Faless/godot,Shockblast/godot,sanikoyes/godot,akien-mga/godot,sanikoyes/godot,Paulloz/godot,groud/godot,Zylann/godot,josempans/godot,NateWardawg/godot,Zylann/godot,guilhermefelipecgs/godot,josempans/godot,josempans/godot,okamstudio/godot,guilhermefelipecgs/godot,godotengine/godot,vkbsb/godot,josempans/godot,firefly2442/godot,Paulloz/godot,josempans/godot,godotengine/godot,ZuBsPaCe/godot,Faless/godot,DmitriySalnikov/godot,mcanders/godot,vnen/godot,akien-mga/godot,honix/godot,pkowal1982/godot,ex/godot,Shockblast/godot,guilhermefelipecgs/godot,Paulloz/godot,Zylann/godot,firefly2442/godot,honix/godot,sanikoyes/godot,RandomShaper/godot,Zylann/godot,mcanders/godot,mcanders/godot,ex/godot,mcanders/godot,akien-mga/godot,BastiaanOlij/godot,ex/godot,josempans/godot,honix/godot,okamstudio/godot,Paulloz/godot,Zylann/godot,BastiaanOlij/godot,godotengine/godot,vkbsb/godot,mcanders/godot,Paulloz/godot,Shockblast/godot,ex/godot,Valentactive/godot,vnen/godot,MarianoGnu/godot,Shockblast/godot,Valentactive/godot,BastiaanOlij/godot,vkbsb/godot,Valentactive/godot,okamstudio/godot,Shockblast/godot,RandomShaper/godot,godotengine/godot,firefly2442/godot,Valentactive/godot,godotengine/godot,ex/godot,BastiaanOlij/godot,Shockblast/godot,Paulloz/godot,ex/godot,vnen/godot,josempans/godot,RandomShaper/godot,pkowal1982/godot,BastiaanOlij/godot,NateWardawg/godot,godotengine/godot,ex/godot,pkowal1982/godot,groud/godot,NateWardawg/godot,MarianoGnu/godot,DmitriySalnikov/godot,MarianoGnu/godot,mcanders/godot,RandomShaper/godot,MarianoGnu/godot,NateWardawg/godot,sanikoyes/godot,MarianoGnu/godot,okamstudio/godot,Valentactive/godot,sanikoyes/godot,sanikoyes/godot,pkowal1982/godot,pkowal1982/godot,Valentactive/godot,RandomShaper/godot,guilhermefelipecgs/godot,vnen/godot,Faless/godot,akien-mga/godot,vnen/godot,pkowal1982/godot,Zylann/godot,groud/godot,akien-mga/godot,groud/godot,DmitriySalnikov/godot,godotengine/godot,vnen/godot,pkowal1982/godot,ZuBsPaCe/godot,groud/godot,guilhermefelipecgs/godot,MarianoGnu/godot,vkbsb/godot,Faless/godot,okamstudio/godot,firefly2442/godot,akien-mga/godot,ZuBsPaCe/godot,RandomShaper/godot,okamstudio/godot,okamstudio/godot,vkbsb/godot,godotengine/godot,ZuBsPaCe/godot,vkbsb/godot,firefly2442/godot,firefly2442/godot,sanikoyes/godot,ZuBsPaCe/godot,Faless/godot,vnen/godot,Paulloz/godot,vkbsb/godot,ZuBsPaCe/godot,BastiaanOlij/godot,okamstudio/godot,Faless/godot,okamstudio/godot,honix/godot,Zylann/godot,vkbsb/godot,akien-mga/godot,firefly2442/godot,ex/godot,Shockblast/godot,NateWardawg/godot,Faless/godot,firefly2442/godot,Faless/godot,DmitriySalnikov/godot,DmitriySalnikov/godot,BastiaanOlij/godot,akien-mga/godot,Shockblast/godot,MarianoGnu/godot,pkowal1982/godot,NateWardawg/godot,guilhermefelipecgs/godot,NateWardawg/godot,guilhermefelipecgs/godot,ZuBsPaCe/godot,RandomShaper/godot,okamstudio/godot,DmitriySalnikov/godot,ZuBsPaCe/godot,DmitriySalnikov/godot,honix/godot,Zylann/godot,NateWardawg/godot,Valentactive/godot,vnen/godot,josempans/godot,NateWardawg/godot,guilhermefelipecgs/godot,Valentactive/godot,MarianoGnu/godot,honix/godot,sanikoyes/godot