Fix `NoiseTexture._generate_texture` crash
Fix `NoiseTexture._generate_texture` crash

Fixes #59915 .

Zylann/godot,guilhermefelipecgs/godot,Shockblast/godot,Valentactive/godot,akien-mga/godot,firefly2442/godot,josempans/godot,guilhermefelipecgs/godot,BastiaanOlij/godot,ZuBsPaCe/godot,ZuBsPaCe/godot,ZuBsPaCe/godot,firefly2442/godot,sanikoyes/godot,akien-mga/godot,josempans/godot,pkowal1982/godot,BastiaanOlij/godot,vkbsb/godot,Shockblast/godot,vkbsb/godot,ZuBsPaCe/godot,pkowal1982/godot,godotengine/godot,Valentactive/godot,pkowal1982/godot,Valentactive/godot,sanikoyes/godot,ZuBsPaCe/godot,Shockblast/godot,godotengine/godot,Valentactive/godot,sanikoyes/godot,Valentactive/godot,godotengine/godot,Shockblast/godot,sanikoyes/godot,Zylann/godot,vkbsb/godot,Valentactive/godot,godotengine/godot,ZuBsPaCe/godot,josempans/godot,BastiaanOlij/godot,firefly2442/godot,BastiaanOlij/godot,sanikoyes/godot,firefly2442/godot,ZuBsPaCe/godot,Zylann/godot,guilhermefelipecgs/godot,akien-mga/godot,guilhermefelipecgs/godot,pkowal1982/godot,BastiaanOlij/godot,godotengine/godot,ZuBsPaCe/godot,sanikoyes/godot,vkbsb/godot,Zylann/godot,guilhermefelipecgs/godot,akien-mga/godot,akien-mga/godot,akien-mga/godot,Zylann/godot,pkowal1982/godot,firefly2442/godot,Zylann/godot,BastiaanOlij/godot,godotengine/godot,godotengine/godot,josempans/godot,akien-mga/godot,firefly2442/godot,sanikoyes/godot,sanikoyes/godot,Shockblast/godot,BastiaanOlij/godot,guilhermefelipecgs/godot,godotengine/godot,Zylann/godot,vkbsb/godot,josempans/godot,josempans/godot,guilhermefelipecgs/godot,akien-mga/godot,pkowal1982/godot,BastiaanOlij/godot,vkbsb/godot,pkowal1982/godot,Shockblast/godot,pkowal1982/godot,vkbsb/godot,Valentactive/godot,josempans/godot,firefly2442/godot,vkbsb/godot,Shockblast/godot,josempans/godot,Zylann/godot,guilhermefelipecgs/godot,Shockblast/godot,Valentactive/godot,firefly2442/godot