Update main to return the given status instead of printing the status out when halted

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

src/main.rs

@@ -36,7 +36,7 @@ fn main() -> Result<()> {
         println!("{}", err.pp(&lexer, &parser::token_epp));
     }
     if !errors.is_empty() {
-        return Ok(());
+        process::exit(1);
     }
     let res = res.unwrap();
     let mut asm = Asm::default();
@@ -44,6 +44,6 @@ fn main() -> Result<()> {
     let mut state = State::new();
     state.load_object(object, 64 * 1024 * 1024)?;
     let status = state.exec()?;
-    println!("exit status: {:#04x}", status);
+    //println!("exit status: {:#04x}", status);
-    Ok(())
+    process::exit((status & 0xffff_ffff) as i32);
 }