fix: 修复设置开机自启动应用重启后失效问题

1. 修复获取自启动列表为空的问题
2. 修复重启后自启动应用没有启动问题

Log:
Influence: 设置自启动后重启应用也会保持生效
Bug: https://pms.uniontech.com/bug-view-172263.html
Change-Id: Id95f4248fe2d29b3a6d03e9b44bee54671e9c5f6

src/lib/keyfile.cpp

@@ -217,8 +217,10 @@ bool KeyFile::loadFile(const std::string &filePath)
 
     std::string lastSection;
     m_fp = fopen(filePath.data(), "r");
-    if (!m_fp)
+    if (!m_fp) {
+        perror("open file failed: ");
         return false;
+    }
 
     char line[MAX_LINE_LEN] = {0};
     while (fgets(line, MAX_LINE_LEN, m_fp)) {