fastgame_apply: monitoring the removal of the presets file and exitti…

…ng accordingly

src/fastgame_apply.cpp

@@ -343,21 +343,7 @@ auto main([[maybe_unused]] int argc, [[maybe_unused]] char* argv[]) -> int {
 
   // nl->new_exit.connect([&](int pid) {});
 
-  auto check_lock_file = [&]() {
-    while (std::filesystem::is_regular_file(input_file)) {
-      std::this_thread::sleep_for(std::chrono::seconds(1));
-    }
-
-    util::info("The lock file has been removed. Exitting the lock thread.");
-
-    nl->listen = false;
-  };
-
   if (nl->listen) {
-    std::thread t(check_lock_file);
-
-    t.detach();
-
     nl->handle_events();  // This is a blocking call. It has to be started at the end
 
     util::info("Netlink event monitor finished.");

src/netlink.cpp

@@ -112,7 +112,7 @@ void Netlink::handle_events() {
 
     auto* nlmsg_hdr = reinterpret_cast<nlmsghdr*>(buff.data());
 
-    while (NLMSG_OK(nlmsg_hdr, len) && listen) {
+    while (NLMSG_OK(nlmsg_hdr, len)) {
       if (!std::filesystem::is_regular_file(input_file)) {
         return;
       }