stage1: stop emitting memset to undefined when safety is off
stage1: stop emitting memset to undefined when safety is off

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