Fix interpreter.py get_var(var_name) in text iter when stream is not enabled (#198)

python/sglang/lang/interpreter.py

@@ -683,7 +683,7 @@ class ProgramState:
             if var_name is None:
                 yield self.text()
             else:
-                yield self.get_var(name)
+                yield self.get_var(var_name)
 
     async def text_async_iter(
         self, var_name: Optional[str] = None, return_meta_data: bool = False
@@ -721,7 +721,7 @@ class ProgramState:
             if var_name is None:
                 yield self.text()
             else:
-                yield self.get_var(name)
+                yield self.get_var(var_name)
 
     def get_var(self, name):
         return self.stream_executor.get_var(name)