Fix Visual Studio throwing C4996 warning in ustring.cpp.
Fix Visual Studio throwing C4996 warning in ustring.cpp.

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