Merge branch 'rs/remove-unused-find-header-mem'

Code clean-up.

* rs/remove-unused-find-header-mem:
  commit: remove find_header_mem()

commit.h

@@ -280,17 +280,12 @@ void free_commit_extra_headers(struct commit_extra_header *extra);
 
 /*
  * Search the commit object contents given by "msg" for the header "key".
- * Reads up to "len" bytes of "msg".
  * Returns a pointer to the start of the header contents, or NULL. The length
  * of the header, up to the first newline, is returned via out_len.
  *
  * Note that some headers (like mergetag) may be multi-line. It is the caller's
  * responsibility to parse further in this case!
  */
-const char *find_header_mem(const char *msg, size_t len,
-			const char *key,
-			size_t *out_len);
-
 const char *find_commit_header(const char *msg, const char *key,
 			       size_t *out_len);