Merge branch 'nd/commit-tree-constness'

Code clean-up.

* nd/commit-tree-constness:
  commit.c: make "tree" a const pointer in commit_tree*()

commit.c

@@ -1356,7 +1356,7 @@ void free_commit_extra_headers(struct commit_extra_header *extra)
 	}
 }
 
-int commit_tree(const struct strbuf *msg, unsigned char *tree,
+int commit_tree(const struct strbuf *msg, const unsigned char *tree,
 		struct commit_list *parents, unsigned char *ret,
 		const char *author, const char *sign_commit)
 {
@@ -1485,7 +1485,7 @@ static const char commit_utf8_warn[] =
 "You may want to amend it after fixing the message, or set the config\n"
 "variable i18n.commitencoding to the encoding your project uses.\n";
 
-int commit_tree_extended(const struct strbuf *msg, unsigned char *tree,
+int commit_tree_extended(const struct strbuf *msg, const unsigned char *tree,
 			 struct commit_list *parents, unsigned char *ret,
 			 const char *author, const char *sign_commit,
 			 struct commit_extra_header *extra)

commit.h

@@ -232,11 +232,11 @@ struct commit_extra_header {
 extern void append_merge_tag_headers(struct commit_list *parents,
 				     struct commit_extra_header ***tail);
 
-extern int commit_tree(const struct strbuf *msg, unsigned char *tree,
+extern int commit_tree(const struct strbuf *msg, const unsigned char *tree,
 		       struct commit_list *parents, unsigned char *ret,
 		       const char *author, const char *sign_commit);
 
-extern int commit_tree_extended(const struct strbuf *msg, unsigned char *tree,
+extern int commit_tree_extended(const struct strbuf *msg, const unsigned char *tree,
 				struct commit_list *parents, unsigned char *ret,
 				const char *author, const char *sign_commit,
 				struct commit_extra_header *);