修复日志备份时候崩溃的问题

src/main.cpp

@@ -26,10 +26,9 @@ void logRolloutHandler(const char* filename, std::size_t size)
     /// 备份日志
     //std::string strLogPath = GetProcDir();
     //strLogPath.append(filename);
-
+    std::cout<<"bk filename:"<<filename<<std::endl;
     std::stringstream ss;
     ss << "mv " << filename << " "<<filename<<"_bk";
-    LOG(INFO)<<"备份日志："<<ss.str().c_str();
     system(ss.str().c_str());
 }
 
@@ -279,7 +278,8 @@ int main()
             LOG(INFO) << "recv ODS pushDate failed or timeout";
         }
     }
-
+    /// 注销回调函数  
+    el::Helpers::uninstallPreRollOutCallback();
     return 0;
 }