Merge branch 'maint'

* maint:
  doc/git-fsck: change the way for getting heads' SHA1s

Author: gitster

Documentation/git-fsck.txt

@@ -79,7 +79,8 @@ that aren't readable from any of the specified head nodes.
 
 So for example
 
-	git fsck --unreachable HEAD $(cat .git/refs/heads/*)
+	git fsck --unreachable HEAD \
+		$(git for-each-ref --format="%(objectname)" refs/heads)
 
 will do quite a _lot_ of verification on the tree. There are a few
 extra validity tests to be added (make sure that tree objects are