feat：修复部分错误

@@ -125,9 +125,11 @@ class CmBroker
     }
     public function init()
     {
-        $this->initPosMode();
         $this->initSymbolInfos();
-        $this->initPositions();
+        if ($this->plat == self::PLAT_OKX && $this->apiInfo && $this->apiInfo->key != '') {
+            $this->initPosMode();
+            $this->initPositions();
+        }
     }
     public function accListen(callable $onData)
     {