Merge branch 'ma/header-dup-cleanup'

Code clean-up.

* ma/header-dup-cleanup:
  cache.h: drop duplicate `ensure_full_index()` declaration

cache.h

@@ -350,8 +350,6 @@ void add_name_hash(struct index_state *istate, struct cache_entry *ce);
 void remove_name_hash(struct index_state *istate, struct cache_entry *ce);
 void free_name_hash(struct index_state *istate);
 
-void ensure_full_index(struct index_state *istate);
-
 /* Cache entry creation and cleanup */
 
 /*