Address review comment

Author: prvyk

libs/server/Resp/Objects/ListCommands.cs

@@ -1030,4 +1030,4 @@ private unsafe bool ListBlockingPopMultiple()
             return true;
         }
     }
-}
+}

libs/server/Transaction/TxnKeyManager.cs

@@ -378,8 +378,7 @@ private int ListObjectKeys(RespCommand command)
                 RespCommand.LINSERT => SingleKey(StoreType.Object, LockType.Exclusive),
                 RespCommand.LLEN => SingleKey(StoreType.Object, LockType.Shared),
                 RespCommand.LMOVE => ListKeys(2, StoreType.Object, LockType.Exclusive),
-                // Account for mandatory LEFT/RIGHT argument
-                RespCommand.LMPOP => ListReadKeysWithCount(LockType.Exclusive, mandatoryArgs: 1),
+                RespCommand.LMPOP => ListReadKeysWithCount(LockType.Exclusive),
                 RespCommand.LPOP => SingleKey(StoreType.Object, LockType.Exclusive),
                 RespCommand.LPOS => SingleKey(StoreType.Object, LockType.Shared),
                 RespCommand.LPUSH => SingleKey(StoreType.Object, LockType.Exclusive),
@@ -488,15 +487,15 @@ private int ListKeys(int inputCount, StoreType storeType, LockType type)
         /// <summary>
         /// Returns a list of keys for LMPOP command
         /// </summary>
-        private int ListReadKeysWithCount(LockType type, bool isObject = true, int mandatoryArgs = 0)
+        private int ListReadKeysWithCount(LockType type, bool isObject = true)
         {
             if (respSession.parseState.Count == 0)
                 return -2;
 
             if (!respSession.parseState.TryGetInt(0, out var numKeys))
                 return -2;
 
-            if (numKeys + mandatoryArgs + 1 > respSession.parseState.Count)
+            if (numKeys + 1 > respSession.parseState.Count)
                 return -2;
 
             for (var i = 1; i < numKeys + 1; i++)