fix build error with signed/unsigned
fix build error with signed/unsigned

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