Add null check for NavigationMesh.create_from_mesh()
Add null check for NavigationMesh.create_from_mesh()

pkowal1982/godot,Zylann/godot,MarianoGnu/godot,pkowal1982/godot,Zylann/godot,BastiaanOlij/godot,sanikoyes/godot,MarianoGnu/godot,akien-mga/godot,firefly2442/godot,vnen/godot,godotengine/godot,akien-mga/godot,Zylann/godot,guilhermefelipecgs/godot,DmitriySalnikov/godot,pkowal1982/godot,vkbsb/godot,MarianoGnu/godot,akien-mga/godot,Faless/godot,DmitriySalnikov/godot,vnen/godot,firefly2442/godot,vnen/godot,akien-mga/godot,Faless/godot,honix/godot,Shockblast/godot,sanikoyes/godot,ZuBsPaCe/godot,josempans/godot,Faless/godot,guilhermefelipecgs/godot,akien-mga/godot,sanikoyes/godot,DmitriySalnikov/godot,firefly2442/godot,Faless/godot,MarianoGnu/godot,guilhermefelipecgs/godot,vkbsb/godot,Shockblast/godot,vnen/godot,BastiaanOlij/godot,godotengine/godot,pkowal1982/godot,honix/godot,vnen/godot,ZuBsPaCe/godot,akien-mga/godot,Zylann/godot,josempans/godot,godotengine/godot,ZuBsPaCe/godot,firefly2442/godot,vkbsb/godot,MarianoGnu/godot,ZuBsPaCe/godot,Shockblast/godot,akien-mga/godot,guilhermefelipecgs/godot,sanikoyes/godot,DmitriySalnikov/godot,Valentactive/godot,vnen/godot,Faless/godot,josempans/godot,ZuBsPaCe/godot,BastiaanOlij/godot,Shockblast/godot,firefly2442/godot,akien-mga/godot,Faless/godot,Shockblast/godot,BastiaanOlij/godot,honix/godot,Valentactive/godot,josempans/godot,Valentactive/godot,ZuBsPaCe/godot,ZuBsPaCe/godot,godotengine/godot,Valentactive/godot,BastiaanOlij/godot,pkowal1982/godot,Valentactive/godot,Valentactive/godot,Zylann/godot,ZuBsPaCe/godot,godotengine/godot,guilhermefelipecgs/godot,Zylann/godot,sanikoyes/godot,BastiaanOlij/godot,vkbsb/godot,Shockblast/godot,DmitriySalnikov/godot,vkbsb/godot,josempans/godot,godotengine/godot,Zylann/godot,Faless/godot,sanikoyes/godot,sanikoyes/godot,Shockblast/godot,guilhermefelipecgs/godot,MarianoGnu/godot,vnen/godot,josempans/godot,firefly2442/godot,honix/godot,BastiaanOlij/godot,pkowal1982/godot,guilhermefelipecgs/godot,MarianoGnu/godot,vkbsb/godot,honix/godot,honix/godot,Faless/godot,josempans/godot,vkbsb/godot,DmitriySalnikov/godot,MarianoGnu/godot,sanikoyes/godot,vnen/godot,vkbsb/godot,Valentactive/godot,josempans/godot,firefly2442/godot,firefly2442/godot,guilhermefelipecgs/godot,Shockblast/godot,Valentactive/godot,godotengine/godot,pkowal1982/godot,BastiaanOlij/godot,Zylann/godot,pkowal1982/godot,DmitriySalnikov/godot,godotengine/godot