fix: Prevent resource leaks by adding body close in stream handlers

relay/channel/openai/relay-openai.go

@@ -249,7 +249,7 @@ func OaiStreamHandler(c *gin.Context, resp *http.Response, info *relaycommon.Rel
 
 	helper.Done(c)
 
-	resp.Body.Close()
+	//resp.Body.Close()
 	return nil, usage
 }