feat:pos bn转换修复

@@ -70,9 +70,9 @@ class Pos
         $posSide = strtoupper($pos['positionSide']);
         $qty = abs($pos['positionAmt']);
         $lot = round($qty / $symbolInfo->ctVal, $symbolInfo->qtyPrec);
-        $avgPrice = $pos['entryPrice'];
-        $pnl = $pos['unRealizedProfit'];
-        $lever = 0;
+        $avgPrice = -1;
+        $pnl = $pos['unrealizedProfit'];
+        $lever = -1;
         $margin = $pos['initialMargin'];
         return new Pos($symbol, $posSide, $qty, $lot, $avgPrice, $pnl, $lever, $margin);
     }