Merge branch 'am/dir-dedup-decl-of-repository'

Code cleanup.

* am/dir-dedup-decl-of-repository:
  dir.h: remove duplicate forward declaration of struct repository

Author: gitster

dir.h

@@ -43,7 +43,6 @@ struct repository;
  *
  */
 
-struct repository;
 
 struct dir_entry {
 	unsigned int len;