lib/repo: Reindent some code in regenerate_summary() for clarity

This makes it a bit more easily separable from the rest of the code in
the function. No functional changes.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #911
Approved by: cgwalters

src/libostree/ostree-repo.c

@@ -4476,14 +4476,15 @@ ostree_repo_regenerate_summary (OstreeRepo     *self,
                                 GCancellable   *cancellable,
                                 GError        **error)
 {
-  g_autoptr(GHashTable) refs = NULL;
-  if (!ostree_repo_list_refs (self, NULL, &refs, cancellable, error))
-    return FALSE;
-
   g_auto(GVariantDict) additional_metadata_builder = OT_VARIANT_BUILDER_INITIALIZER;
   g_variant_dict_init (&additional_metadata_builder, additional_metadata);
   g_autoptr(GVariantBuilder) refs_builder = g_variant_builder_new (G_VARIANT_TYPE ("a(s(taya{sv}))"));
 
+  {
+    g_autoptr(GHashTable) refs = NULL;
+    if (!ostree_repo_list_refs (self, NULL, &refs, cancellable, error))
+      return FALSE;
+
     g_autoptr(GList) ordered_keys = g_hash_table_get_keys (refs);
     ordered_keys = g_list_sort (ordered_keys, (GCompareFunc)strcmp);
 
@@ -4523,7 +4524,7 @@ ostree_repo_regenerate_summary (OstreeRepo     *self,
                                                     ostree_checksum_to_bytes_v (commit),
                                                     g_variant_dict_end (&commit_metadata_builder)));
       }
-
+  }
 
   {
     g_autoptr(GPtrArray) delta_names = NULL;