Fix uninitialized `Viewport::use_debanding` member variable
Fix uninitialized `Viewport::use_debanding` member variable

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