jit works

src/syntax/tokens.rs

@@ -270,6 +270,7 @@ impl TryFrom<i64> for ConstantType {
             21 => Ok(ConstantType::I16),
             22 => Ok(ConstantType::I32),
             23 => Ok(ConstantType::I64),
+            255 => Ok(ConstantType::Void),
             _ => Err(InvalidConstantType::Value(value)),
         }
     }