fix lin

src/tribler/core/recommender/community.py

@@ -177,7 +177,7 @@ def process_query_info(self, peer: Peer, request: dict) -> None:
             query_id=query.rowid,
             results=len(unpacked["results"]),
             chosen_index=unpacked["chosen_index"],
-            timestamp=unpacked["timestamp"] if "timestamp" in unpacked else 0,
+            timestamp=unpacked.get("timestamp", 0),
             query=unpacked["query"],
         )), b""))
 
@@ -222,7 +222,7 @@ def __init__(self, request_cache: RequestCache, peer: Peer, response: dict) -> N
         self.total_results = response["results"]
         self.results: list[ResultItem | None] = [None] * self.total_results
         self.chosen_index = response["chosen_index"]
-        self.timestamp = response["timestamp"] if "timestamp" in response else 0
+        self.timestamp = response.get("timestamp", 0)
         self.query = response["query"]
 
     def get_next_range(self) -> tuple[int, int] | None: