feat:修复bug

@@ -102,6 +102,7 @@ class CmBroker
                 }
                 if (isset($data['arg']) && $data['arg']['channel'] == 'positions') {
                     $positions = [];
+                    $eventType = $data['eventType'];
                     foreach ($data['data'] as $key => $value) {
                         $wsDataPos = WsDataPos::TransferOkxPos($value, $this->symbolInfos, function ($symbol) {
                             return $this->getSymbolSt($symbol);
@@ -111,9 +112,14 @@ class CmBroker
                             $positions[$wsDataPos->symbol . "_" . $wsDataPos->posSide] = $pos;
                             $wsData = new WsData($this->plat, 'pos', $trade = null, $pos = $wsDataPos);
                             $onData($wsData);
+                            if ($eventType == 'event_update') {
+                                $this->positions[$wsDataPos->symbol . "_" . $wsDataPos->posSide] = $pos;
+                            }
                         }
                     }
-                    $this->positions = $positions;
+                    if ($eventType == 'snapshot') {
+                        $this->positions = $positions;
+                    }
                     return;
                 }
                 if (isset($data['arg']) && $data['arg']['channel'] == 'account') {