basic/hashmap,set: move pointer symbol adjactent to the returned value

I think this is nicer in general, and here in particular we have a lot
of code like:
 static inline IteratedCache* hashmap_iterated_cache_new(Hashmap *h) {
         return (IteratedCache*) _hashmap_iterated_cache_new(HASHMAP_BASE(h));
 }
and it's visually appealing to use the same whitespace in the function
signature and the cast in the body of the function.

src/basic/ordered-set.h

@@ -54,7 +54,7 @@ static inline void* ordered_set_steal_first(OrderedSet *s) {
         return ordered_hashmap_steal_first((OrderedHashmap*) s);
 }
 
-static inline char **ordered_set_get_strv(OrderedSet *s) {
+static inline char** ordered_set_get_strv(OrderedSet *s) {
         return _hashmap_get_strv(HASHMAP_BASE((OrderedHashmap*) s));
 }