add test for compile error returning from defer expression
add test for compile error returning from defer expression

closes #218

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