std: avoid calling close twice in InStream
std: avoid calling close twice in InStream

thanks ofelas for pointing this out

Dimenus/zig,andrewrk/zig,zig-lang/zig,raulgrell/zig,zig-lang/zig,Dimenus/zig,Dimenus/zig,raulgrell/zig,zig-lang/zig,raulgrell/zig,raulgrell/zig,andrewrk/zig,raulgrell/zig