fix off-by-one error in sizeInBaseUpperBound
fix off-by-one error in sizeInBaseUpperBound

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