updated structure.py

Author: Nick-prog

core/structure.py

@@ -460,6 +460,8 @@ def translate_N3_N4(self) -> str:
 
         address = ', '.join(self.target[1:])
 
+        if address == '':
+            return
 
         if self.target[0] == 'N4':
             return f'Primary Address: {address}'