tree-wide: use set_ensure_put()

Patch contains a coccinelle script, but it only works in some cases. Many
parts were converted by hand.

Note: I did not fix errors in return value handing. This will be done separate
to keep the patch comprehensible. No functional change is intended in this
patch.

src/tmpfiles/tmpfiles.c

@@ -3196,11 +3196,7 @@ static int link_parent(ItemArray *a) {
                 if (!j)
                         j = ordered_hashmap_get(globs, prefix);
                 if (j) {
-                        r = set_ensure_allocated(&j->children, NULL);
-                        if (r < 0)
-                                return log_oom();
-
-                        r = set_put(j->children, a);
+                        r = set_ensure_put(&j->children, NULL, a);
                         if (r < 0)
                                 return log_oom();