fixed label handling

hbasm/src/lib.rs

@@ -128,7 +128,7 @@ pub fn assembly(code: &str, buf: &mut Vec<u8>) -> Result<(), Error> {
                         }
                     }
                     Some(Ok(Token::Label(lbl))) => {
-                        self.label_map.insert(lbl, self.buf.len() as u64 + 1);
+                        self.label_map.insert(lbl, self.buf.len() as u64);
                     }
                     Some(Ok(Token::ISep)) => (),
                     Some(Ok(_)) => return Err(ErrorKind::UnexpectedToken),

hbvm/src/main.rs

@@ -6,7 +6,7 @@ use {
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     let mut prog = vec![];
     stdin().read_to_end(&mut prog)?;
-
+    
     if let Err(e) = validate(&prog) {
         eprintln!("Program validation error: {e:?}");
         return Ok(());