Fix the case where r.prefix_indices is None (#1031)

python/sglang/srt/managers/policy_scheduler.py

@@ -35,13 +35,12 @@ class PolicyScheduler:
         self.tree_cache = tree_cache
 
     def calc_priority(self, waiting_queue: List[Req]):
-        if self.policy in ["lpm", "dfs-weight"]:
-            # Compute matched prefix length
-            for r in waiting_queue:
-                # NOTE: the prefix_indices must always be aligned with last_node
-                r.prefix_indices, r.last_node = self.tree_cache.match_prefix(
-                    rid=r.rid, key=r.adjust_max_prefix_ids()
-                )
+        # Compute matched prefix length
+        for r in waiting_queue:
+            # NOTE: the prefix_indices must always be aligned with last_node
+            r.prefix_indices, r.last_node = self.tree_cache.match_prefix(
+                rid=r.rid, key=r.adjust_max_prefix_ids()
+            )
 
         if self.policy == "lpm":
             # Longest Prefix Match