fix: remove pipe when daemon is closed

daemon/src/receive.c

@@ -15,7 +15,7 @@
 int lock() {
     int lockfile_fd;
 
-    if ((lockfile_fd = open(LOCKFILE, O_CREAT | O_WRONLY | O_EXCL)) < 0) {
+    if ((lockfile_fd = open(LOCKFILE, O_CREAT | O_EXCL)) < 0) {
         if (errno == EEXIST) {
             perror("Lockfile already exists. Maybe another process is already using it?");
         } else {
@@ -81,5 +81,6 @@ int receive_read(receive_t* receive, daemon_measurement_t* daemon_measurement) {
 }
 
 int receive_deinit(receive_t* receive) {
+    remove(DAEMON_PIPE_NAME);
     return unlock();
 }