machine-id: fix missing initialization

src/shared/util.c

@@ -234,6 +234,17 @@ void close_many(const int fds[], unsigned n_fd) {
                 close_nointr_nofail(fds[i]);
 }
 
+int unlink_noerrno(const char *path) {
+        PROTECT_ERRNO;
+        int r;
+
+        r = unlink(path);
+        if (r < 0)
+                return -errno;
+
+        return 0;
+}
+
 int parse_boolean(const char *v) {
         assert(v);
 

src/shared/util.h

@@ -646,3 +646,5 @@ static inline unsigned u64log2(uint64_t n) {
 static inline bool logind_running(void) {
         return access("/run/systemd/seats/", F_OK) >= 0;
 }
+
+int unlink_noerrno(const char *path);