fix.修复任务失败死循环的问题

src/MeoAssistant/AbstractTask.cpp

@@ -22,7 +22,7 @@ AbstractTask::AbstractTask(AsstCallback callback, void* callback_arg)
 
 bool asst::AbstractTask::run()
 {
-    for (int i = 0; i != m_retry_times; ++i) {
+    for (m_cur_retry = 0; m_cur_retry < m_retry_times; ++m_cur_retry) {
         if (_run()) {
             return true;
         }

src/MeoAssistant/AbstractTask.h

@@ -41,6 +41,7 @@ namespace asst
         void* m_callback_arg = NULL;
         bool* m_exit_flag = NULL;
         std::string m_task_chain;
+        int m_cur_retry = 0;
         int m_retry_times = RetryTimesDefault;
     };
 }

src/MeoAssistant/ProcessTask.cpp

@@ -143,8 +143,8 @@ bool ProcessTask::_run()
         } break;
         default:
             break;
-        }
-        m_retry_times = 0;
+        }
+        m_cur_retry = 0;
 
         ++exec_times;