shared/async: prefix process name with sd-

src/shared/async.c

@@ -41,7 +41,7 @@ int asynchronous_sync(pid_t *ret_pid) {
 static int close_func(void *p) {
         unsigned v = PTR_TO_UINT(p);
 
-        (void) prctl(PR_SET_NAME, (unsigned long*) "(close)");
+        (void) prctl(PR_SET_NAME, (unsigned long*) "(sd-close)");
 
         /* Note: 💣 This function is invoked in a child process created via glibc's clone() wrapper. In such
          *       children memory allocation is not allowed, since glibc does not release malloc mutexes in