fix ca_report

@@ -751,7 +751,7 @@ def ca_compare(application_id, application_entity, ocr_res_id, last_obj, ocr_res
             time.sleep(5)
 
         # 将比对结果发送GCAP
-        start_time = time.time()
+        start_time_int = time.time()
         try:
             data = gcap.dict_to_xml(comparison_res)
         except Exception as e:
@@ -781,8 +781,7 @@ def ca_compare(application_id, application_entity, ocr_res_id, last_obj, ocr_res
                 compare_log.info('{0} [CA] [task success] [entity={1}] [id={2}] [ocr_res_id={3}]'.format(
                     log_base, application_entity, application_id, ocr_res_id))
             finally:
-                end_time = time.time()
-                duration_second = int(end_time - start_time)
+                duration_second = int(time.time() - start_time_int)
                 try:
                     InterfaceReport.objects.create(
                         source=SystemName.OCR.name,