fix: fixed hash map get returns not being correct

hash_map.c

@@ -25,7 +25,7 @@ void *hash_map_get_raw(HashMap *self, void *key) {
     for(size_t i = 0; i < bucket.len; ++i) {
         uintptr_t *key_at = list_at(&bucket, i);
         if(hash == *key_at)
-            return ++key_at;
+            return ((char*)key_at) + sizeof(uintptr_t) + self->key_size;
     }
     return NULL;
 }